Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on May 13, 1991.
As of Saturday, December 15th, 2018 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModelsRemarks
D900-183390-91 BMW 318is 1.8L0-261-200-175

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-176-2
  • Executive Order 176-2 / D176-2
  • ARB # D-176-2
  • Executive Order No: D-176-2
  • C.A.R.B. No. D-176-2
  • Resolution D-176-2
For Free CARB Executive Order Status verification, email an image of the device Executive Order label as well as the Year/Make/Model and Test Group # of the vehicle to [email protected]

Download: Executive Order D-176-2 PDF

D-176-2 Document:



                                                           (Page 1 of 2)

                                  State of California
                                  AIR RESOURCES BOARD

                                EXECUTIVE ORDER D—176—2
                     Relating to Exemptions Under Section 27156
                                of the Vehicle Code

                                DINAN ENGINEERING, INC.
                                    PERFORMANCE CHIP

    Pursuant to the authority vested in the Air Resources Board ("ARB") by
    Section 27156 of the Vehicle Code; and

    Pursuant to the authority vested in the undersigned by Sections 39515 and
    39516 of the Health and Safety Code and Executive Order G—45—5;

    IT IS ORDERED AND RESOLVED:    That the installation of the performance chip
    manufactured by Dinan Engingering, Inc. ("performance chip") has been found
    not to reduce the effectiveness of required motor vehicle pollution control
    devices and, therefore, is exempt from the prohibitions of Section 27156 of
    the Vehicle Code for those applications listed in Exhibit A, which is
    attached hereto and incorporated herein.

    This Executive Order is valid provided that installation instructions for
    this performance chip will not recommend tuning the vehicle to
    specifications different from those submitted by the device manufacturer.

    Changes made to the design or operating conditions of the device, as
    exempted by the ARB, that adversely affect the performance of a vehicle‘s
—   pollution control system shall invalidate this Executive Order.

    Marketing of this device using an identification other than that shown in
    this Executive Order or marketing of this device for an application other
    than those listed in this Executive Order shall be prohibited unless prior
    approval is obtained from the Air Resources Board. Exemption of a kit shall
    not be construed as an exemption to sell, offer for sale, or advertise any
    component of a kit as an individual device.

    This Executive Order does not constitute any opinion as to the effect the
    use of this device may have on any warranty either expressed or implied by
    the vehicle manufacturer.

    This Executive Order is granted based on results from emissions tests
    conducted in accordance with Cold—Start CVS—75 Federal Test Procedure.
    However, the ARB finds that reasonable grounds exist to believe that use of
    the performance chip may adversely affect emissions of motor vehicles when
    operating under conditions outside the parameters of the previously
    prescribed test procedures. Accordingly, the ARB reserves the right to
    conduct additional emission tests, in the future, as such tests are
    developed, that will more adequately measure emissions from all cycle
    phases. If such test results demonstrate that the performance chip
    adversely affects emissions during off—cycle conditions (defined as those
    conditions which are beyond the parameters of the Cold—Start CVS—75 Federal
    Test Procedure), this Executive Order shall be effectively rescinded as of
    the date the test results are validated.    Further, if such test results or


DINAN ENGINEERING, INC.                   EXECUTIVE ORDER D—176—2
                                           (Page 2 of 2)




other evidence provides the ARB with reason to suspect that the performance
chip will affect the durability of the emission control system, Dinan
Engingering, Inc. shall be required to submit durability data to show that
the durability of the vehicle emission control system is not, in fact,
affected and/or that the add—on or modified part demonstrates adequate
durability.

In addition to the foregoing, the ARB reserves the right in the future to
review this Executive Order and the exemption provided herein to assure that
the exempted add—on or modified part continues to meet the standards and
procedures of Title 13, California Code of Regulations section 2222 et seq.

THIS EXECUTIVE ORDER DOES NOT CONSTITUTE A CERTIFICATION, ACCREDITATION,
APPROVAL, OR ANY OTHER TYPE OF ENDORSEMENT BY THE AIR RESQURCES BOARD OF ANY
CLAIMS OF THE APPLICANT CONCERNING ANTI—POLLUTION BENEFITS OR ANY ALLEGED
BENEFITS OF DINAN ENGINEERING, INC.‘S PERFORMANCE CHIP.

No claim of any kind, such as "Approved by the Air Resources Board" may be
made with respect to the action taken herein in any advertising or other
oral or written communication.

Section 17500 of the Business and Professions Code makes untrue or
misleading advertising unlawful, and Section 17534 makes violation
punishable as a misdemeanor.

Section 43644 of the Health and Safety Code provides as follows:

     "43644,   (a)  No person shall install, sell, offer for sale, or
     advertise, or, except in an application to the state board for
     certification of a device, represent, any device as a motor vehicle
     pollution control device for use on any used motor vehicle unless that
     device has been certified by the state board.       No person shall sell,
     offer for sale, advertise, or represent any motor vehicle pollution
     control device as a certified device which, in fact, is not a certified
     device. Any violation of this subdivision is a misdemeanor."

Any apparent violation of the conditions of this Executive Order may result
in its rescission or submission to the Attorney General of California for
such action as he deems advisable.              4

Executed at E1 Monte, California, this    /53   d   of May, 1991.
                                                     1




                                             7 Summerfield
                                         Assistant Division Chief
                                         Mobile Source Division


                     CREAIBIT a

List the nemes, model years, engine displacements and
systems that are compatible with the device, and for which
exemption is requested. Specify the correct device model
for each vehicle.

                                                      Oinan Engineering
Make     Model     Years     Displ    ECU Number      Performance Chip *

BMW      318is     90—91     1.8     0—261—200— 175   D900—1833
BMW      325e      8BS—~87    2.7    0—261—200—027    0900—271 1
BM Ww    3251      87—88     25      0—261—200—153    D0900—253 1
BMW      3251      89—91     25      0—261—200— 173   0900—2532
BMwW     3251      89—91     25      0—261—200—380    D900—2533
BMW      m—3       88—91     23      0—261—200—07 1   D900—232 1
BMW      5251      89—91     25      0—261—200—173    D900—2532
BMW      52591     89—9 1    2.5     0—261—200—524    D900—2534
BMW     . §28e     85—87      2.7    0—261—200—027    D900—271 1
BMW       §33i     84        3.2     0—261—200—008    D900—33 11
BMW       §3Si     85—87      3.4    0—261—200—059    D900—352 1
BMW       5391     88        3.4     0—261—200—059    0900—3522
BMW       §35i     89—91      3.4    0—261—200— 179   D900—3532
BMW      M—§S      84—88     3.5     0—261—200—055    P900—3420
BMW      M—S       87—88      3.5    0—261—200—079    D900—3421
BMW      m—S       90—91     3.6     0—261—200—350    D900—363 |
BMwW     633csi     84        3.2    0—261—200—008    D900—33 1 1
BMw      63Scsi     85—87    34      0—261—200—059    D900—3521
BMW      63Scsi     88       3.4     0—261—200— 150   D900—353 1
BMW      635¢csi    89       3.4     0—261—200— 179   D900—3532
BMw      h—6        84—88      3.5   0—261—200—055    0900—3420
BMW      M—6        87—88     3.5    0—261—200—079    D900—342 1
BMw      7331       84       3.2     0—261—200—008    D9800—33 11
BMW      7391       85—87     3.4    0—261—200—059    D900—352 1
BMW      7351    _‘ 88       3.4     0—261—200—150    0900—353 1
BMw      7351       B9—91    3.4     0—261—200— 179   D900—3532
BMw      750iL    88—91      5.0     0—261—200—156    D900—503 1


                    State of California
                    AIR RESOURCES BOARD




EVALUATION OF DINAN ENGINEERING, INC.‘S PERFORMANCE CHIP FOR
EXEMPTION FROM THE PROHIBITIONS OF VEKHICLE CODE SECTION 27156
        IN ACCORDANCE WITH SECTION 2222, TITLE 13, OF
             THE CALIFORNIA CODE OF REGULATIONS




                           May, 1991


                                                         May, 1991




       EVALUATICN OF DINAN ENGINEERING, INC.‘S PERFORMANCE CHIP FOR
       EXEMPTION FROM THE PROHIBITIONS IN VEHICLE CODE SECTION 27156
               IN ACCORDANCE WITH SECTION 2222, TITLE 13, OF
                     THE CALIFORNIA CODE OF REGULATIONS




                                     by
                           Mobile Source Division

                            State of California
                            AIR RESOURCES BOARD
                            9528 Telstar Avenue
                          E1 Monte, CA    91731—2990




(This report has been reviewed by the staff of the California Air Resources
Board and approved for publication. Approval does not signify that the
contents necessarily reflect the views and policies of the Air Resources
Board, nor does mention of trade names or commercial products constitute
endorsement or recommendation for use.)


                                  SUMMARY


       Dinan Engingering, Inc. has applied for an exemption from the

prohibitions of Vehicle Code Section 27156 for their Performance Chip for

installation on those model/model year BMW‘s listed in Appendix A.     Dinan

has submitted a completed application and other required information, as

well as exhaust emissions test data performed at Automotive Club of Southern

California Laboratory (ACSC) which shows thét their Performance Chip does

not have any adverse effect on the exhaust emissions of the affected

vehicles.   Testing performed at the Air Resources Board {ARB) confirmed the

test results of ACSC.

       Based on the submitted information and the results of the emissions

tests performed at ACSC and the ARB, the staff concludes that the

installation of Dinan‘s performance chip will not adversely affect exhaust

emissions on the specified vehicles.

       The staff recommends Dinan Engineering, Inc. be granted an exemption

as requested and that Executive Order D—176—2 be issued.


SUMMARY
CONTENTS
I.        INTRODUCTION
II.    CONCLUSI
III.      RECOMMENDATIONS
IV.       CHIP
V.        DISCUSSION



          APPENDIX A — Model/model year BMW‘s compatible

                         with the performance chip

       APPENDIX B — Performance Modifications

          APPENDIX C — Performance Chip part numbers and

                         installation instructions




                                          11


EVALUATION OF DINAN ENGINEERING, INC.‘S PERFORMANCE CHIP FOR EXEMPTION FROM
THE PROHIBITIONS IN VEHICLE CODE SECTION 27156 IN ACCORDANCE WITH SECTION
           2222, TITLE 13, OFf THE CALIFORNIA CODE OF REGULATIONS.




I.         INTRODUCTION
           Dinan Engineering, Inc. (Dinan) of 81 Pioneer Way, Mountain View,

California 94041, has applied for an exemption from the prohibitions of

Vehicle Code Section 27156 for their Performance Chip for installation on

those model/model year BMW‘s listed in Appendix A.

           Dinan has submitted a completed application and all the required

information as well as data from exhaust emissions test performed at

Automobile Club of Southern California Laboratory {ACSC) on a 1990 model

year BMW 7351i.      Confirmatory test was performed on the same vehicle at the

ARB.

     II.   CONCLUSION
           Based on the submitted information and the results from exhaust

emissions test performed at ACSC and confirmatory testing conducted at the

ARB, the staff concludes that Dinan‘s performance chip will not adversely

affect exhaust emissions from vehicles for which the exemption is requested.

III.       RECOMMENDATIONS

           The staff recommends that Dinan Engingering, Inc. be granted an

exemption as requested and that Executive Order D—176—2 be issued.

IV.        PERFORMANCE    CHIP   DESCR

           The purpose of the Dinan performance chip is to improve engine

performance by increasing horsepower and the electronic rev—limit.      Many

computer controlled vehicles are equipped with electronic control units

which are programmed utilizing a removable PROM.      These PROMs contain the

control unit‘s operating systems as well as all the data used to operate the


programs.     By re—programming the data prom in the Electronic Control

Module‘s (ECM), spark timing, fuel delivery and rev—limit can be adjusted.

Adjustments to these parameters are necessary to increase horsepower and the

rev—limit.

       The applicant states that the original equipment manufacturer‘s {OEM)

system maintains closed loop fuel control at all times except start—up,

part-throttie-hkgh-load and full—throttle.     No modifications are made by the

Performance Chip to any fuel delivery operating parameters during modes of

closed loop control so that the air/fuel ratio in these modes are not

altered.

       During open loop modes, the Performance Chip may change the ignition

timing, fuel delivery and rev—limit, depending on the driving conditions.

Under light—load conditions, the ignition timing is advanced to optimize

fuel economy for premium fuel.     Under high—load conditions, the ignition

timing, fuel delivery and rev—limit are changed to optimize power output for

premium fuel.     Ignition timing is advanced from 0 to 15 degrees above the

OEM setting.     Fuel delivery is increased from O to 15 percent of the OEM

setting or decreased from 0 to 15 percent of the OEM setting depending on

the change from OEM that will be required to optimize the mixture ratio.

Rev—limit is increased from 0 to 600 RPM (See Appendix B).     Installation
instructions, included with the chip, show the installer how to properly

install the chip.     Appendix C shows the installation instructions and the

parts list.

       ¥.      DISCUSSION
       A 1990 California—certified BMW 7351 with an automatic transmission

was used for emissions testing at ACSC laboratory.     The test program

consisted of one FTP CVS—75 {cold start) test on the test vehicle in the


modified configuration (tested against the standard).      The results of the

exhaust emissions test performed at ACSC are shown in Table 1.

                                       Table 1

                              CVS—75 TEST RESULTS
                    {Automotive Club of Southern California)

                                             HC     CQ     NOx
                    Emission standards      0.41    7.00   0.7

                    Performance Chip        0.32    4.16   0.19

       Confirmatory testing was performed at the ARB.       The results are

shown in Table 2.

                                       Table 2

                              CVS—75 TEST RESULTS

                            (Haagen—Smit Laboratory)

                                             HC      CQ     NQx
                    Performance Chip        0.33    5.24   0.18

       The CVS—75 emissions test results at ACSC and confirmatory testing at

the ARB indicate that HC, CO and NOx emissions of Dinan‘s performance chip

are well below the emission standards. This demonstrates that the

installation of the Dinan performance chip on specified vehicles will not

adversely affect the exhaust emissions.

       Dinan submitted all the required information and fulfilled the

requirements for an exemption.    The test results confirmed that Dinan‘s

Performance Chip meets the requirements for the exemption.


                        ELawad      an


List the nemes, model years, engine displacements and
systems that are compatible with the device, and for which
exemption is requested. Specify the correct device model
for each vehicle.

                                                           Dinan Engineering
Mske     Model      Years    Displt       fECU Number      Performance Chip *

BMwW     3181s      90—9 1    1.8        0—261—200— 175    D900—1833
BMWw     325e       8§—87     2.7        0—261—200—027     D900—27 11
BMw      3251       87—88    25          0—261—200— 153    D900—253 1
Bnw      3251       89—91    25          0—261—200— 173    D900—2532
BMWw     3251       89—91    25          0—261—200—380     D900—2533.
BMW      M—3        B68—91   2.3         0—261—200—07 1    0900—2321
BMW      5251       89—91    25          0—261—200— 173    900—2532
BMw      §$251      8B9—91   25          0—261—200—524     D900—2534
BMw      528e       8BS—87    2.7        0—261—200—027     09006—27 11
BMW      5331       64       3.2         0—261—200—008     D900—33 11
BMwW     535        8S—87     3.4        0—261—200—059     D900—352 1
Bnw      5391       88       3.4         0—261—200—059     D900—3522
BMW      5351       89—91    3.4         0—261—200— 178    D900—3532
BMW      M—5        84—08    3.5         0—261—200—055     ©900— 3420
BMw      M—5       87—88      3.5        0—261—200—079     D9006—3421
Bgnw     M—S5      90—91     36          0—261—200—350     D900—363 1
BMW      633csi    84        3.2         0—261—200—008     D900—331 1
Bnw      63Scsi    B8B5—87    3.4        0—261—200—059     D900—352 1
BM W     835csi    88        3.4         0—261—200— 150    D900—353 |
BMWw     G35csi    89        3.4         0—261—200— 179    D960—3532
BMNw     M—6       84—88      3.5        0—261—200—055     D900—3420
BMW      M—6       87—B88     3.5        0—261~200—0798    0900—342 1
BMw      7331        84      3.2         0—261—200—0086    D900—33 1 1
BM Ww    7391        85—87    3.4        0—261~200—059     D900—352 1
BMw      735i     _‘ 88      3.4         0—261—~200—150    D900—353 1
BMW      7351        89—91   3.4         0—261—200— 179    D900—3532
Bhw      750L       B88—91   5.0         ‘0—261—200— 156   ©900—503 1


                                          APPENDIX 3




    Moge or                    Control|    Moaification to    Modification to   Mogification to
    Feature                    Mode        Iignition timing   Ignition timing   Rev—limit
                                           Above 08M          % of OEM          Above OEM

    Cold—start                 OPEN        NONE               NONE              NA

    Cola—hmigh—idle            OPEN        NONE               NONE              NA

    warm—start                 UPEN        NONE               NONE              NA

    Warm—idle                  CLOSED|     NONE               NONE              NA

    Lignt—load—part—throttle   CLOSED|     Q—5                NONE              NA       C

*   High—load—part throttle    OPEN        O—15               */~ 15            0—600

    Full—throttle              OPEN        O—15               r/~ i5            0—600

    Deceleration               CLOSED|    NONE                NONE              NA

    Deceleration—fuel—cut      NA         NONE                NONE              NA

    ldle speeqd control        CLOSED!    NONE                NONE              NA


                         AFFERDIX C




item C—1     Installation Instructions for    D900—27 11
Item C—2     installation Iinstructions for   D900—33 11
Item C—3     Installation instructions for    D900—2321
                                              D900—3420
                                              D900—3421
                                              D900—3521
                                              0900—3522
ltem C—4     Installation Instructions for    D9800—2531
                                              D900—353 1
                                              D900—503 1
                                              D900—363 1
item C—S     Installation Instructions for    B900—2532
                                              D900—3532

Item C—S5A   Installation Instructions for    D900—2533

Item C—58    Installation Instructions for    D900—2534

Item C—6     Installation Instructions for    D910—3221
                                              0910—3222

Item C—7     Installation Instructions for    8910—2522

Item C—8     Installation Instructions for    D900—1833


                                                      C—1

              DINAN ENGINEERING PERFORMANCE CHIP INSTALLATION
                                MOTRONIC— 1
         1985— 1987 325e BOSCH ECU #0—261—200—027 or #0—261—200—02 1
         1985— 1987 528e BOSCH ECU *#0—261—200—027 or #0—261—200—02 1


Thank you for purchasing a Dinan Engingering power chip. Many hours of research and development
have gone into each program to optimize ignition and fuel delivery curves for maximum power

Some mechanical skill is requireo to perform this operation. if you feel that you 30 not possess
the required skill please arrange to have a qualified repair facility do the installation for you.

if you encounter any difficulties during this installation or if these instructions are not clear to you
please call Dinan Engineering for assistance @ 415—962—9417.

TOOLS REQUIRED FOR INSTALLATION:

—Phillips screwariver ({medium)
~Phillips screwariver (large}
—Standard screwdriver (small)
~Standard screwdriver (pocket size)
—iOmm sochet on 3/8 or 1/4 arive ralcnet with 6" extension

REMOVE ELECTRONIC CONTROL UNIT (ECU) FROM VEHICLE:

325e     ONLY

1. Open glove box, remove ping securing limiting straps to sides of glove box and aliow glove box to
open all the way.

2. Remove the fasteners securing plastic glove box roof panel. Pull this panel cownand allow it to rest
in the glove box.

3. Remove the 1Omm boits or the Phillips screws securing the ECU. Let the ECU srop down and remove
the wiring narness from it. Take ECU to the workbench.

528e ONLY

1. Open glove box, remove pins securing limiling straps to siges of glove box ana allow glove box to
open all the way.

2. Remove viny! glove box roof from rear of glove box by pushing up on vinyl where it connects to rear
wall of glove box. Swing viny! roof out of glove box. DQ NOT remove front eng of vinyl roof as this
will destroy the snaps that hold it on. Use a piece of tape to hold the vinyl to the desnboard so that it is
out of your way.

3. Remove the 10mmbolts or the Phillips screws securing the ECU. Let ECU grop sown and remove the
wiring harness from it. Take ECU to the workbench.


CN THE WCREKBENCH

4     Read Bosch part number on ECU.    Should be:

                      0—261—200—027
                      0—261—200—021

if your computer does not display one of these part numbers call Dinan Engineering & <.5—562—9417
DO NOT install the power chip!

5. P‘ace ECU on workbench with part number label face down and remove the four screws holding the
cover on Separate case, set cover aside (you are removing the cover with no lapels oo it).

6. Remove the four screws and the rubber vibration isolator securing the printed cirs :t (PC) board to
the computer chassis. Lift the PC up ang filp it over as shown in figure 1

    . See figure 1. Find the socketed chip on the upper beard. This chip is eleveted higt=" than any
similar chip on the board.

8. Remove chip from socket by inserting the pocket screwdriver belween the chip ans the socket and
prying up gently. Pry up in stages swilching ends as you go until the chip is totally locse. Set stock chip
aside.

9. See figure 2. Notice the small divol on one end of the power chip. Notice a similar zyot on one end
of the socket. The chip must be inserted so that both divots are on the same side. Som ECUs will have
a 28 pin chip socket. The Dinan 24 pin chip will workin these ECUs. Plug the 24 pin crip in the 28 pin
socket lining up the Nat edge of the chip to the socket as in figure 2. First Insert one row of pins in one
side of the socket part—way. With two fingers push on the other side of the chip until tme other row of
pins line up with the socket and then push down on chip. Use your other hand to suppert the bottom sige
of the PC board directly below the socket while you push down on chip to make sure tret it is inserted
all the way. Cautiont BE CAREFUL NOT TO BEND ANY PINS.
Visually verify that all the pins are in a socket hole and that all socket holes are fillec with pins except
for those that should be empty on a 28 pin socket.

    10. Reassemble computer .Install ECU in venicle.



This chip increases spark advance. This makes it necessary to
run Supreme Unleaded Fuel, 91 octane or better.

The information contained on this chip is the sole property of
Dinan Engineering and its reproduction is unlawful. Dinan
Engineering will prosecute to the full extent of the law


 *Smog Legal® in California under; ARB E.0. No. D—XXX




                                         FIGURE 2




|   —— The EPHOM!S correctly installed when the EPROM flat edge aligns with tho
       1C socket flat edgo.


                       EPROM FLAT ____
                         EDoE




                     1C SOCKET
                     FLAT EDGE




       Some control [un'ns will have a 28 pin IC socket. When Installing the 24 pin
       updated EPR?M in a 28 pin socket, the EPROM flat edge must align with the
       IC flat edge. A this Important polint is not followed, the control unit will
       not opsrate and EPROM damage may result.


                       EPROM FLAT
                           EDGE




                       1t sockEr ___
                       FLAT Ebag


                                                      CAz



                 DINAN ENGINEERING PERFORMANCE CHIP INSTALLATION
                                   MOTRONIC— t
                  1984 533i, 633i, 733i BOSCH ECU #0—261—200—008


Thank you for purchasing a Dinan Engineering power chip. Many hours of research ang development
have gone into each program to optimize igmbon and fuel dehvery curves for maximum power.

Some mechanical skili is required to perform this operation. If you feel that you do not possess
the required skill please arrange to have a qualified repair facility do the instailation for you.

If you encounter any difficulties during this installation or if these instructions are not clear to you
please call Dinan Engineering for assistance @ 415—962—9417.

TOQLS REQCUIRED FOR INSTALLATION:

—Phillips screwdriver {medium)
~Phillips screwdriver Clarge)
~Standard screwdriver (small)
—Standard screwdriver (pockel size)
—1Omm socket on 378 or 1/4 drive ratchet with 6" extension

REMOVE ELECTRONIC CONTROL UNIT (ECU)FROM VEHICLE:

ALL CARS EXCEPT 7331

1. Open glove box, remove pins securing limiting straps to sides of glove box and allow glove box to
open all the way.

2. S33i (cars with vinyl glove box roof) OHLY. Remove viny! glove box roof from rear of
glove box by pushing up on vinyl where it connects to rear wall of glove box. Swing viny! reof out of
glove box. DO NOT remove front end of viny! roof as this will destroy the snaps that hold it on. Use a
piece of tape to hold the vinyl to the dasnboard so that it is out of your way.

2. 633i (cars with hard plastic glove box roof) ONLY. Remove the fasteners securing
plastic glove box roof panel. Pull this panel down and allow it to rest in the glove box.

3. Remove the 10mm bolts or the Phulliss screws securing the ECU. Let ECU drop down and remove the
wiring harness from it. Take ECU to the workbench.

7331 ONLY

1. Remove the Phillips screws securing passenger side front speaker panel. Swing panel out of the way.

2. Remove the tOmm bolts or the Phillips screws securing ECU. Let ECU drop down and pull it out of
the hole that it is in, Remove the wiring harness from the ECU.

3. Take ECU to the workpench.


ON THE WORKBENCH:

4 Read Bosch part number on ECU. Should be:

                    0—261—200—008

If your computer does not display one of these part numbers call Dinan Engineering @ 41$—362—9417.
DO NOT install the power chip!

S. Place ECU on workbench with part number label face down and remove the four screws holding the
cover on. Separate case, set cover aside (you are removing the cover with no labels on :t)

6. Remove the four screws ana the rubber vibration isolator securing the printed cire=it (PC) board to
the computer chassis, Lifl the PC up and fip it over as shown in figure 1.

7. See figure 1. Fing the socketed chip on the upper board. This chip is elevated higher tnan any
similar chip on the boeard. If your computer does not have a socketed chip and ts different from the
computer shown in figure 1 DONOT proceed any further! You have an early version computer which can
not utilize this Dinan Performance Chip. Call Dinan Engineering @ 415—962—9417.

8. Remove chip from socket by inserting the pocket screwdriver between the chip and the socket and
prying up gently. Pry up in stages ewitching ends as you go until the chip is totally loose Set stock chip
aside.

9. See figure 2. Notite the small divot on one end of the power chip. Notice a similar avot on one end
of the socket. The chip must be inserted so that both divots are on the same side. Some ECUs will have
a 26 pin chip socket. The Dinan chip will work in these ECUs. Plug the 24 pin chip into2 28 pin socket
lining up the flat eage of the chip to the socket as in figure 2. First insert one row of pins in one side of
 the socket part—way. With two fingers push on the other side of the chip until the other row of pins line
 up with the socket and then pusn down on chip. Use your other hand to support the bottomm: side of the PC
 board directly below the socket while you push down on chip to make sure that it is inserted all the way.
 Cautiont SE CAREFUL NOT TO BEND ANY PINS.
 Visually verify that all the ping are in a socket hole and that all socket holes are filled with pins except
 for those that should be empty on a 28 pin socket.

 10. Reassemble cormputer Install ECU in vehicle.



 This chip increases spark advance. This makes it necessary to
 run Supreme Unleaded Fuel, 91 octane or better.

 The information contained on this chip is the sole property of
 Dinan Engineering and its reproduction is unlawful. Dinan
 Engineering will prosecute to the full extent of the law.


 *Smog Legal® in California under; ARB E.0. No. D—XXX




                                   FIGURE 2




—— The EPROMJS correctly installed when the EPROM fiat edge aligns with the
   IC socket fiat edge.


                   EPROM FLAT ___ _
                     Epag




                 IC SQOCKET
                 FLAT EDGE




— Some contro!‘units willl have a 28 pin IC sockat, When installing the 24 pin
  updated EPR&)M in a 28 pin socket, the EPROM flat edge must align with the
  IC fiat edge. f thia iImportant polat is not followed, the control unit will
  not opsrate qnd EPROM damage may result.


                   EPROM FLAT
                      Ebor




                    1C SOCKET
                    FLAT EDGE


                     DINAN ENGINEERING POWER CHIP INSTALLA TION
                                   FOR MOTRONIC—2
             1985—88 5351. 1985—87 635i, 735i BOSCH ECU #0—261—200—059
                       USA M—5, M—6 BOSCH ECU ©0—261—200—079
                         USA M—3 BOSCH ECU #0—261—200—07 1
                      EURCG M—5, M—6 BOSCH ECU *0—261—200—055

Thank you for purchasing a Dinan Engineering power chip. Many hours of researcr. and development
have gone into each program to optimize ignition and fuel delivery curves for maximum power.

Some mechanical skill is required to perform this operation. if you feel that you as not possess
the required skill please arrange to have a qualifled repair facility do the Instaliation for you.

if you encounter any difficulties during this installation or if these instructions are not clear to you
please call Dinan Engineering for assistance @ 415—962—3417,


TOOLS REQUIRED FOR INSTALLATION:

~Phillips screwdriver (medium)
~Standard screwdriver (small)
~Standard screwdriver (pocket size}
~1Qmm socket on 378 or 1/4 drive ratchet with 2" extension
~Blunt nose pliers (medium?)


REMOVE ELECTRONIC CONTROL UNIT (ECU)FROM VEHICLE:

ALL CARS EXCEPT 7351

1. Open glove box, memove pirs securing limiting straps to sides of glove box and allow glove box to
open all the way.

2. 5351, M—S (cars wilh viny! glove box roof} ONLY. Remove viny! glove box roof from
rear of glove box by pushing up on vinyl where it connects to rear wall of glove box. Swing vinyl roof
out of glove box. DQ NOT remove front end of vinyt roof as this will destroy the sneps that hold it on.
Use a piece of tape to hold the vinyl to the dashboard so that it is out of your way.

2. 6351, M—6, M—3 (cars with hard plastic glove box roof} ONLY. Remove the fasteners
securing plastic glawe box roof panel. Pull this panel down and allow it to rest in the glove box.

3. Remove the 10mm bolts or the Phillips screws securing the ECU. Let ECU drop down and remove the
wiring harness from it. Take ECU to the workbench.

73591 ONLY

1. Remove the Phillips screws securing passenger side front speaker panel. Swing panel out of the way.

2. Remove the 1Ommbolts or the Phillips screws securing ECU, Let ECU drop down and putl it out of
the hole that it is tn. Reriove the wiring harness from the ECU.

3. Take ECU to the worktbench


ON THE WORKBENCH.

4. Reag Bosctrpart number on ECU. Should be:

                       0—261—200—059 or
                       0—261~200—079 or
                       0—261—200—07 1 or
                       0—261—200—055

If your computer does not display one of these part numbers call Dinan Engingering & 415~5962—9417
DO NOT install the power chip!

S. See figure 1. Place ECU on workbenich with part number label face down and using tne pocket
screwdriver pry the ten lock tabs that hold the unit together up slightly. Just enough to get the small
screwdriver under the tabs and finish prying the labs straight up. Separate case, set cover aside,

6. See figure 2 and figure 3. Hold ECU with metal side down and the plug ena fecing eway. Gmp mounting
tabs with both hands and push up on upper printed circult (PC) board where the two plastic pedestals
connect to the PC board. The object here is to separate the pedestal snap connections. Cautiont DO
NOT PUSH UP ON CORNERS OF PC BOARD OR BOARD WiILL FLEX AND SREAKI

7. Raise rear portion ofboard which was just unsnapped and slide board away from plug, until the
board disengages from the plug housing. Flip over upper PC board so that both PC boards are face up.

8. See figure 4. Find sotketed chip on the upper board. This chip can be identifieg by a sticker with a
series of numbers printed on it and that it is elevated higher than any simflar chip on the beard.

9. Remove chip from socket by inserting the pocket screwdriver between the chip and the socket and
prying up gently . Pry up in stages swilching enas as you go until the chip is totally loose. Set stock chip
aside.                                                    .

 10. See figure 5. Notice the small divet on one end of the power chip. Notice a similar divet on one end
of the socket. The chip must be inserted so that both divots are on the same side. First insert one row of
pins in one side of the socket part—way . With two fingers push on the cther side of the chip until the
other row of ping line up with the socket ang then push down on chip. Use your other hand to support the
botlomn side of the PC board directly beiow the socket while you push down on chip to make sure that it
is inserted all the way. Cautiont BE CAREFUL NOT TO BEND ANY PINS.
Visually verify that all the pins are in a socket hole and that all socket holes are filleg with pins.

11. Reassemble PC boeards. Reinstall cover on ECU making sure to Insert the white plastic sheet first.
Use pliers to bend cover lock tabs back into place. Install ECU in vehicle.




This chip increases spark advance. This makes it necessary to run Supreme
Unleaded Fugl, 91 octans or batter.

The information contained on this chip ts the sole property of Dinan Engingering
and its reproduction is unlawful. Dinan Engineering will prosecute to the full
extent of the law.


*Smog Legal® in California under ; ARB E.0. No. D~XXX


NMOHS S¥ Sgvi y907 an ON3I   ’_ngu


FIGURE ‘
              GRIP MOUNTING TABS AND PUSH UP OIQPPER PC Boarp.
           PuSH UP WHERE PLASTIC PEDESTALS ARE, NOT ON THE corNERS,




                                            a     C357    C
                              rreesact
                              ond          MBE
                                  } -u..u-u;          Er
                                             m ) I;fi'l“‘l fl';fl:\' M


                                                  wllIl1])


     ~0                                     moures          @   .




UPPER PC BOARD * Mflmwmwyxu
   PEDESTAL SNAP CONNECTION —>EFFE4               :

                                           ie.:f'aw“’.:s
LOWER PC BOARD > goes=— es                           a
                  *AMW                      '
    METAL Bage —> _ 21 7                           ——
                                      PEDESTAL SNAP CONNECTIONS CLOSED




                              eesongon
               PUSH UP HERE /fi4. 5‘1{: IH '


                               2. 4
                                                AULLL
                                                LE1 CAE E
                              149 p             AATFE
                              ~a 6.             PDPPLr
                                ;           HHL
                                                PLPH




                                       PEDEST AL SNAP CONNECTIONS OPEN


                                 \m:o_.._
    daxyog No NoI1Lv30T7 dIH]}
.


                                FIGURF~
                                          C




                                 CHIPp


KE SURE DIVOTS ARE ALIGNE
                          D   _4 4
                              SockEt


                DINAN ENGINEERING PERFORMANCE CHIP INSTALLATION
                                      MOTROXIC— 3 Yersion 1
                    1988 6351, 7351 BOSCH ECU *0—261—200—150
                    1988—1991 750il BGSCH ECU #0—261—200—156
                    198 7— 1988 3251 BOSCH ECU #0—261—200—153
                       1991 MS BOSCH ECU #0—261—200— 350

Thank you for purchasing & Dinan Engineering power chip. Many hours of research and development
have gone into each program to optimize ignition and fuel delivery curves for maximum power.

Some mechantcal skill is required to perform this operation. If you fee} that you do not possess
the required skill please arrange to have a qualified repair facility do the installation for you.

if you encounter any difficulties during this installation or if these instructions are not clear to you
please call Dinan Engineering for assistance @ 415—962—9417.

TOQLS REQUIRED FOR INST ALL ATION:

~Phillips screwdriver (medium)
~Phillips serewdriver Carge)
~Standard screwdriver (small)
~Standard sorewdriver {pocket size)
~10mm socket on $78 or 174. drive ratchet with 6" extension
~Blunt nose pliers (medium)

REMOVE ELECTRONIC CONTROL UNIT (ECU) FROM VEHICLE :

$251, 6351       OHLY

1. Open glove box, remove pins securing limiting straps to sides of glove box and allow glove box to
open all the way .

 2. Remove the fasteners securing plastic glove box roof panel. Pull this panel down and allow it to rest
in the glove box.

3. Remove the 1Omm bolts or the Phillips screws securing the ECU. Let the ECU drop down and remove
 the wiring harness from it. Take ECU to the workbench.

 MS, 735i, 750i OHLY

 1. See figure 1. Open hood, loosen four large Phillips screws securing black plastic cover
 located on passenger side of engine bay between strut tower and firewall. Remove cover, set aside.

MS, 735i ORLY
2. See figure 2. Disconnect wiring harness from Motronic ECU. Remove the 1Omm nuts securing ECU
 to chassis.

3, Pull ECU straight up. Take ECU to the workbench.


     7901 ONLY

     2. See figure 3. Disconnect wiring harness from both Motronic ECUs. Remove both black plastic wire
     protectors from ECU mounting tabs by pulling straight up. Remove the 10min nuts securing ECUs to
     chassis

     3. Pull ECUs straight up. Take ECUs to the workbench. Perform steps 4 thru 1% on both ECUs.



     ON THE WORKEBENCH :

     4. Read Bosch part number on ECU. Should be:

                          0—261—200—150 or
                          0—261—200—153 or
                          0—261—200—156 or
                          0—261—200—350

     If your computer does not display one of these part numbers call Dinan Engineering @ 415—962—9417.
     DQ HOT install the power chip!

     S. See figure 4. Plase ECU on workbench with part number label face down and using the pocket
     screwdriver pry the ten lock tabs that hold the unit together up slightly. Just enough to get the small
     screwdriver under the tabs and finish prying the tabs straight up. Separate case, set cover aside.
     Check to make sure your ECU has two printed circuit (PC) boards. If you have a single PC board ECU you
     have 3 newer design ECU and this chip will not work. .Call Dinan Engineering @ 415—962—9417.

     6. See Tigure S and figure 6. Hold ECU with metal side down and the plug end facing away . Grip mounting
     tabs with both hands and push up on upper printed cireuit (PC) board where the two plastic pedestals
     connect to the PC board. The object here is to separate the pedestal snap connections. Caution! DO
     MOT PUSH UP OH CORNERS OF PC BOARD OR BOARD WILL FLEX AND BREAK!

     7. This is the most difficult step! See figure 7 to understand the goal of this step, See figure 8 to
     understand how the latches are arranged. Hold ECU with metal side down and plug end facing you. With
     one hand apply upward pressure on upper PC board, as in step 6. At the same time , with your other
     hand, use the pocket screwdriver to release the plastic latches located inside the plug housing at both
     ends of the top row of pins (see f1g.8). To release these latches insert the pocket screwdriver in the
     gap between the latch and the plug housing and rotate. The upward pressure on the upper PC board
     should keep the latches from relatching when the screwdriver is removed. While maintaining this
     position insert the small serewdriver between the plug housing and the plastic that the top row of pins
     are molded into and rotate, then pull the upper PC board away from the plug housing. DO NOT pry
     against any of the pins as they may becorne damaged. Pull back on upper PC board until the pins clear
     the plug housing and then flip over the upper PC board so that both PC boards are face up as in figure 7.

     8. See figure 7. Find the socketed chip on the upper board. This chip can be identified by the black
     plastic "H" shaped retaining elip locking it into the socket and that it is elevated higher than any similar
     chip on the board.

     9. See fiqure 9. Remove the "H" shaped retaining clip by inserting the pocket sorewdriver into one of
     the small slots in the retaining clip and pry ing towards the other slot. The retaining clip—will pop up on
     the side the screwdriver is inserted in, use a finger to hold that side up while you insert the
     screwdriver in the other slot and release the other side. Lift retaining clip off of the chip and set aside,
({
 A


10. Remove chip from socket by inserting the pocket screwdriver between the chip and the socket and
prying up gently . Pry up in stages switching ends as you go until the chip is totally loose. Set stock chip
aside

11. See figure 10. Notice the small divot on one end of the power chip. Notice a similar divot on one
end of the socket. The chip must be inserted so that both divots are on the same side. First insert one
row of pins in one side of the socket part—way.. With two fingers push on the other side of the chip until
the other row of ping line up with the socket and then push down on chip. Use your other hand to support
the bottom side of the PC board directly below the socket while you push down on chip to make sure that
it is inserted all the way. Caution! BE CAREFUL NOT TO BEND ANY PINS.
Visually verify that all the pins are in a socket hole and that all socket holes are filled with pins.

12. Reinstall retaining clip. Reassemble PC boards making sure that upper PC board is pushed into the
plug housing all the way and that the latches are fully engaged. Reinstall cover on ECU making sure to
insert the white plastic sheet first. Use pliers to bend cover lock tabs back into place. Install ECU in
vehicle.



This chip increases spark advance. This makes it necessary to
run Supreme Unleaded Fuel, 91 octane or better.

The information contained on this chip is the sole property of
Dinan Engingering and its reproduction is unlawful. Dinan
Engineering will prosecute to the full extent of the law.


"Smog Legal" in California under; CARB E.0. No. D—XX%


                                   AING 1067 pug i6¢z *‘gu




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FIGURE 4e                                t .



            BEND UP LOCK TABS AS SHOWN


FIGURE S


           —                .




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                   €   us       .'-who‘




               uJH
               smm 1..“““
                                ntseoray.


                           FIGURE 6




UPPER PC BOARD *


                                                         PEDESTAL SNAP CONNECTION

LOWER PC BOARD * ;
   METAL BASE —> _
                     PEDESTAL SNAP CONNECT IONS CLOSED




                                                         PUSH UP HERE
                      a.
                      t
                      a
                      m
                                «4
                                     in
                                     3
                                     <
                                     a.
                                     o
                                     5
                                     =
                                     3
                                         ul

                                              2
                                              a
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                                              5
                                              A.
                                              is
                                              z7




                            &


   FIGUREFC




                     1
                              T
                              “"J         ‘       ‘9
                                                          &
                 i                            npome                   Mess    o       ereeeeinelllllllls l            on e ny en epene n on

                                al                                0
                                                                      * YEnnlane

                                                                              ©@0)a00            .                       3            :   R        Ni'

                                                                             go                  3              ' TOP ROW OF PINS —>—
                                                                                                                                   _  «W j
                                                                       §X             ! P
PLUG HOUSING >                                                               4          —       &—                                            z        as
                                                                                  70.           ge—         m                                          —

                                                                                  Y                 =   e                                                  e


                                              | "H" SHAPEDCHIP RETAINING CLIP —>»


                                                                      eg_tAs                            22.                  ©                    Al
                     LOWwER PC BoARD _*® “_'_‘ 4n                                               o           $   UPPER PC BOARD       f—            ‘


                          1     Do        1—              ‘       I                         —               |     —



                         "ikh
                              | _ _~ ®
                                     0.               ©       +


                                     INSERT SMALL SCREWORIvER HeRg
                                     ROTATE AND WITH YOUR OTHER HAND
                                     PULL BACK ON UPPER PC BOARD



                                                                                              <——Plastic latch




"IGURE 9                                                             :    FIGurE to
                                    |_pry this way UNTIL CLIP popS UP @       mms e s ns e ce es
                                         CCC uim .
                        SM)Q’DK_/




POCKET SCREWDRIVER —»


                                                                                                   ChH

                                                                          MAKE SURE DOIVOTS   \L   \L    J/
                                                                          ARE ALIGNED




                                    LE


                  DINAN ENGINEERINO POWER CHIP INSTALLATION
                             MOTRONIC—3 Yersion 2
              1989—>5351, 6351, 7351 BOSCH ECU #0—261—200— 179
           1989— 1990 3251, 325tx, 5251 BOSCH ECU «0—261—200— 173


Thank you for purchasing a Dinan Engineering power chip. Many hours of research and development
have gone inlo each program to optimize ignition and fuel delivery curves for maximum power

Sorae ttechanical skill is required to performthis operation if you feel that you do not possess
the required skill please acrange to have a qualifted repair Tacility go the instaliation for you.

If you encounter any difficulties during this installation or if these instructions are not Clear to you
please call Dinan Engineering for assistance @ 415—962—9417.

TOOLS REOLIRED FOR INSTALLATION:

—Ptillips screwgriver (medium)
—Ptuilips screwariver Clarges
—Standard screwdiiver (omall)
~Standard strewariver (pocket size)
—10mmm socket on 378 or 1/4 drive ratchet with 6" extension
~Blunt nose pliers (medurn)

REMOVE ELECTRONIC CONTROL UNHT (ECU) FROM VEHICLE.

3251, 6351 ONLY

1. Open glove box, remove pins securing limiting straps to sides of glove box and allow glove box to
spen all the way

2. Rernove the fasteners securing plastic glove box roof panel. Pull tmis panel gown and allow it to rest
in the glove box

3 Retnove the 10rmmbolts or the Phitlips screws securing the ECU. Let the ECU drop down ang remove
the mring harness fromit. Take ECU to the workbench.

§25i, S351, 7351 ONLY

1. See igure 1     Oped hnood, loosen four large Phillips screws securing black plastic cover
located on passenger side of engine bay between strul tower and firewall. Remove cover, set aside.

T
2. See figure 2. Disconnect wiring harness from Motronic ECU. Remove black plastic wire protector
trom ECU mounting tab by pulling straight up. Remove the 1Omm nuts securing ECU to chassis.

3. Pull ECU straight up. Take ECU to the workbench,

CH THE WORKBENCH:

4. Read Bosch part number on ECU. Should be:

                     6—261—200—179 or
                     0—261—200—173

if your computer does not gisplay one of these part numbers call Dinan Engineering @ 415—962—9417.
DC NOT install the power chipt


5 See ligure 3 Place ECU on workbench with part number label face gown and using the pocket
screwdriver pry the ten lock tabs that hold the unit together up slightly Just enough to get the small
screwdriver under the labs and finish prying the labs straight up. Separate case, set cover aside
Check to make sure your ECU has one printed circuit (PC) board. If you nave a two PC board ECU you
have an older design ECU and this chip will not work. Call Dinan Engineering @ 415—962—9417.

6. See figure 4 Find the sockeled chip on the board. This chip can be identified by tne black plasti¢ "H"
shaped retaining clip locking it into the socket and that it is elevated higher than any similar chip on the
board

7. See figure 5. Remove the °H" shaped relaining clip by Inserting the pocket screwgriver into one of
the smatl stots in the retaining clip and prying towards the other siot. The retaining clip will pop up on
the side the screwdriver is inserted in, use a finger to hold that sige up while you insert the
screwariver in the other slot and release the other side. Lift retaining clip off of the chip and set aside.

10 Remove ctip fromsocket by inserting the pocket screwdriver between the chip and the socket and
prying up gently. Pry up in stages switching ends as you go until the chip is totally isose. Set stock chip
#Sig¢ .



 11. See figure 6. Notice the small divot on one end of the power chip. Notice a similar divol on one end
of the socket. The chip must be Inserted so that bothdivets are on the sarme side. First Insert one row of
pins in one sige of the socket part—way . With two fingers push on the other side of the. chip until the
other row ofpins line up with the socket and then push down on chip and make sure that It is Inserted all
the way. Cautiont BE CAREFUL NOT TO BEND ANY PINS.
Visually verify that all the ping are in a socket hole and that all socket holes are filled with pins.

12. Reinstall retaining clip. Reinstall cover on ECU; use pliers to bend cover lock tabs back into place.
Install ECU in vericle,



This chip increases spark advance. This makes it necessary to
run Supreme Unleaded Fuel, 91 octane or better.

The information contained on this chip is the sole property of
Dinan Engineering and 1ts reproduction is unlawful. Dinan
Engineering will prosecute to the full extent of the law.


*Smog Legal® in California under; ARB E.0. No. D—XXX


FIGURE 3


                                SHOWN
           BEND UP LOCK TABS AS




                                        i g:s.


FIGURE 4




           TT


                                                W onh



                   DINAN ENGINEERING POWER CHIP INSTALLATION
                              MOTRONIC— 3 Yersion 2
               1989— 1990 3251, 3251x BOSCH ECU *#0—261—200—380


Thank you for purchasing a Dinan Engineering power chip. Many nours of research and development
have gone into each program to optimize ignition and fuel gelivery curves for maximum power

Some mechanical shill is required to perform this operation. If you feel that you co not possess
the required skill please arrange to nave a qualified repair factlity do the instaliation for you.

if you encounter any difficulties auring this installation or if these instructions are not clear to you
please call Dinan Engineering for assistante @ 415—962—9417.

TOXAS REQUIRED FOR INSTALLATION:

~Phillips screwdriver (medium)
~Phillips screwdriver (large}
—Standard screwdriver (small)
~Standard screwdriver (pocket size)
—1Ommsackel on 3/8 or 1/4. urive ratchet with 6" extension
~Blunt nase pliers (medium)

REMOVE ELECTRONIC CONTROL UNIT (ECU)FROM VEHICLE:

1. Open glove box. remove pins securing limiting straps to sides of glove box and allow glove box to
open all the way.

2. Remave the fasteners securing plastic glove box roof panel. Pull this panel down and allow it to rest
in the glove box

3. Remove the 1Orm bolts or the Phillips screws securing the ECU. Let the ECU drop down ang remove
the wiring harness fromit. Take ECU to the workberich.


(it THE WORKBENCH

4. Pesd Bosch part number on ECU      Should be:

                    0—261—200—380


If your computer does not display one ofthese part numbers call Dinan Engineering @ 415—962—9417.
DO HOT install the power chipt


S   Place ECU on workbench with part nutnber label facing up and remove the four small screws near the
plug housing    See figure 3. Place ECU on workberich with part number label face down and using the
packet screwdriver pry the ten lock tabs that hold the unit together up slightly. Just enough to get the
smmall Sorgemdriver under the tabs and finish prying the tabs straight up. Separate case, set cover
asige. Check to make sure your ECU has one printed circuit (PC) board. if you have a two PC board ECU
you have an older design ECU and this chip will not work. Call Dinan Engineering @ 415—962—9417.

6 See figure 4 Find the socketed chip on the board. This chip can be identified by the black plastic "H"
snaped retmirung clip locking it into the socket and that it 1s elevated higher than any similer chip on the
board.

7. See figure 5    Remove the "H" shaped retaining clip by inserting the pocket screwdriver into one of
the small slots in the retatrung Clip and prying towards the other slot. The retaiming clip will pop up on
the side the screwariver is inserted in, use a finger to hold that side up while you insert the
scre wdriver in the other slot and release the other sige. Liff retaining clip off of the chip and set aside.

10. Retieve thip from sotket by inserting the pocket screwdriver between the chip and the socket and
prying up gently . Pry up in stages switching ends as you go until the chip is totally loose Set stock chip
aside

11. See figure 6. Notice the small divet on one end of the power chip. Notice a similar divot on one end
ofthe socket. The chip must be inserted so that both divots are on the same side. First insert one row of
pins in one side of the socket part—way. With two fingers push on the other side of the chip until the
other row of pins line up withthe socket and then push down on chip and make sure that it is inserted all
the way. Cautiont BE CAREFUL NOT TO BEND ANY PINS.
Visually verify that all the pins are in a socket hole and that all socket holes are filled with pins.

12. Reinstall retaining clip. Reinstall cover on ECU, use pliers to bend cover lock tabs bactk into place.
Replace the four screws removed in step 5. Install ECU in vehicle.


This chip increases spark advance. This makes it necessary to
run Supreme Unleaded Fuel, 91 octane or better.

The information contained on this chip is the sole property of
Dinan Engineering and its reproduction is unlawful. Dinan
Engineering will prosecute to the full extent of the law.


"Smog Legal® in California under; ARB E.0. No. DO—XXX


FIGURE 3«                                i~




            BEND UP LOCK TABS AS SHOWN


r1gumrt 4p_.




                                                euutta


               ! [JB "n" shapeo chir ectaiminc cuir x8

                d~€ -\"@L ‘  l \ '.%_ yas .A«y‘
                        batot‘ys                         14


FIGURE 5                                                           FIGURE 6

                             PRY THIS WAY UNTIL CLIP POPS UP
                        ) [ TT * y ;                           s
                        A


OCKET SCREWDRIVER —» Q
                       S
                        3
                       &                                                                             CHIP

                                                                   MAKE SURE DIVOTS           i     \L       \l/
                                                                   ARE ALIGNED   -\
                                                                                      .   )
                   .                                                                              SOckET
               SLOTS                                                                                     ,

           J                11




      I~—~—

    TOP VIEW           SIDE VIEW


                                                  C—u.
                      DINAN ENGINEERING POWER CHIP INSTALLATION
                                 MOTRONIC— 3 Yersion 2
                         1990 5251 BOSCH ECU #*0—261—200—524


Thank you for purchasing a Dinan Engineering power chip. Many hours of research and development
have gone into ach program to optimize ignition and fuel dehvery curves for maximurm power.

Some thechanical skill is required to perform this operation. if you feel that you do not posSess
the required skill please arrange to have a qualified repair facility do the iInstaltation for you.

If you encounler any difficulties during this installation or If these Instructions are not clear to you
please call DinanEngineering for assistance @ 415—962—9417.

TOOLS REGUIRED FOR INSTALLATION:

—Phillips screwdriver (large)
~Standard screwdriver (small)
~Standard screwariver (pocket size)
—10mimsucket on 378 or 1/4. drive ratchet with 6" extension
~Blunt nose pliers (medium)

REMOVE ELECTRONIC CONTROL UKNIT (ECU) FROM VEHICLE:

1. See figure 1. Open hood, loosen four large Phillips screws securing black plastic cover
localed on passenger sige of engine bay between strut tower and firewall. Remove cover, set aside.

2. See Nigure 2. Disconnect wiring harness from Motronic ECU. Remove black plastic wire protector
from ECH mounting tab by pulling straight up. Remove the 10mm nuts securing ECU to chassis,

3. Pull ECU straight up. Take ECU to the workbench.

ON THE WORKEBENCH:

4. Read bosch part number on ECU. Should be:

                     1—262—200—524


if your computer does not display one of these part numbers call Dinan Engineering & 415—962—9417.
DQ NOT install the power chipt


5. See Tigure 3. Place ECU on weorkbench with part number label face down and using tme pock et
screwariver pry the ten lock labs that hold the unit together up slightly. Just enougr: to get the small
screwdriver ungen the tabs and fimish prying the tabs straight up. Separate case,        cover aside

6. See (igure 4 Find the socketed chip on the board. This chip can be Identified by e black plastic °H"
shaped retaiming clip locking it into the socket and thal it is elevated higner than any s.milar chip on the
board

7. See figure 5 Rernove the "H" shaped retaining clip by inserting the pocket screwariver into one of
the smmall slots in the retaining clip and prying towards the other slot. The retaining clip will pop up on
the side the screwdriver is inserted in, use a finger to hold that side up while you insert the
screwariver in the other slot ang release the other sige. Lift retaining clip off of th# chip and set aside.

10. Remove cmip from sucket by inserting the pocket screwdriver between the cmip and the socket and
prying up geatly. Py up in stages switching ends as you go until the chip is totally sase. Set stock chip
aside.

11. See figure 6. Notice the stmall divot on one end of the power chip. Notice a sima ar divotl on one end
of the sucket. The chip must be inserted so thal both divots are on the same side. First insert one row of
pins in one side of the socket part—way. With two fingers push on the other side of tme chip until the
other row of pins line up with the socket and then push down on chip and make sure that it is Inserted all
the way. Cautiont BE CAREFUL NOT TO BEND ANY PINS.
Visually verify that all the pins are in a socket hole and that all socket holes are ied with pins.

12. Reinstall retmning clip. Reinstall cover on ECU, use pliers to bend cover lock tsus back into place
Install ECU in vehicle.



This chip increases spark advance. This makes it necessary to
run Supreme Unleaded Fuel, 91 octane or better.

The information contained on this chip is the sole property of
Dinan Engineering and its reproduction is unlawful. Dinan
Engineering will prosecute to the full extent of the law.


*Smog Legal"® in California under; ARB E.0. No. D—XXX


     401331044 Juim JlSvig
                           ovig



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FIGURE 2~                                l



            BEND UP LOCK TABS AS SHOWN


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FIGURE 5                                                                  f   FIGURE 6

                                        PRY THIS WAY UNTIL CLIP POPS UP
                               ) TT oi
                              4


POCKET SCREWDRIVER—»|        CO\

                             &
                              $
                                                                                                             CHiP

                                                                              MAKE SURE DIvOTS       \L     \L      ‘]/
                                                                              ARE ALIGNED


                     SLOTS                                                                       |        SockET

    1            o           N S\
             J                    ——M


        i~—~—i

   TOP VIEW                  SIDE VIEW


             DINAN ENGINEERING PERFORMANCE CHIP INSTALLATIGN
                              FOR MOTRONIC— 2
         1984— 1986 Porsche 911 Carrera BOSCH ECU #0—261—200—080
         1987—1988 Porsche 911 Carrera BOSCH ECU *0—261—200—082

Thank you for purchasing a Dinan Engineering performente chip. Many hours of ressarch and
development have gone into sach program to optimze ignition and fuel gelivery curves for
maximuin power.

Some mechantcal sk1ll is required to perform tms operation. If you feel that you do not possess
the required skill please arrange to have a qualified repair fecility do the instailation Tor you.

If you encounter any difficulties dur ing this installation or if these instructions are not clear to
you please call Dinan Engineering for assistance @ 415—962—941 7.


T00LS REQUIRED FOR INSTALLATION:

—Standard screwariver (small)
—Standard screwdr iver (pocket size)
~10mm socket on 378 or 174 drive ratchet with 1" extension
—Blunt nose pliers (medium)

REMOVE ELECTRONIC CONTROL UNHT (ECU) FROM YEAICLE:

1. Open grivers door. Pull back carpet under drivers seet to expose ECU.

2. Remove nuts securing ECU to fioor. Lfft ECU up and out from under the seat and uriplug wiring
harness from ECU.

3. Take ECU to workbanch.


ON THE WORKBENCH:

4. Read Bosch part number on ECU. Should be:

                       0—261—200— 050 or
                       0—261—200—082


If your computer does not display one of these part numberss calt Dinan Enginesring @
415—962—9417. DQ NOT install the power chipt


5. See figure 1. Place ECU on workbench with part number label face down and using the pocket
screwdriver pry the ten lock tabs that hold the unit together up slightly. Just enough to get the
small screwdriver under the tabs and finish prying the tabs straight up. Separate case, set
cover aside.

6. See figure 2 and figure 3. Hold ECU with metal side down and the plug end facing away. Grip
mounting tabs with both hands and push up on upper printed ciroult (PC) boar d whare the two
plastic pedestals connect to the PC board. The object here is to separate the pedestal snap
connections Cautiont DO NOT PUSH UP ON CORNERS OF PC BOARD OR BOARD WiILL
FLEX AND BREAK!

7. Raise rear portion of board which was Just unsnapped and slide board awey from plug, until
the board disengages from the plug housing. Flip over upper PC board so thet both PC beards are
face up.

8. See figure 4. Find socketed chip on the upper board. This chip can be Identified by a sticker
with a series of numbers printed on it and that it is elevated higher than any similar chip on the
board.

9. Remove chip from socket by inserting the pocket screwdriver between the chip and the socket
and prying up gently. Pry up in stages switching erids as you go unt1} the chip is tatally laose. Set
stock chip asido.                                                    '

10. See figure 5. Notice the small divot un one end of the power chip. Notice a similar divot on
one end of the socket. The chip must be inserted so that both divots are on the same sige. First
insert one row of pins in one side of the socket part—way. With two fingers push on the other
side of—the chip until the other row of pins Hine up with the socket and then push down on chip.
Use your other hand to support the bottem side of the PC board directly below the socket while
you push down on chip to make sure that it is inserted all the way. Caution! BE CAREFUL
NOT TO BEND ANY PINS.
Visually verify that all the pins are in a socket hole and that all socket hotes are filled with pins

11. Reassemble PC boards. Reinstall cover on ECU making sure to insert the white plestic sheet
first, Use pliers to bend cover lock tabs back into place. Install ECU in vehicle.


This chip increases spark advance. This makes it necessary to
run Supreme Unleaded Fuel, 91 octane or better.

The information contained on this chip is the sole property of
Dinan Engineering and its reproduction is unlawful. Dinan
Engineering will prosecute to the full extent of the law


*Smog Legal"® in California under; ARB £.0. No. D—XXX


riOUunC   i                                     ~~
  /.~         Benp up Lock Ttass as sHown   .        W


                                                  @
                   a

FIGURE .
              GRIP MOUNTING TABS AND PUSH UP ON       er PC Boarp.
           PusH UP WHERE PLASTIC PEDESTALS >.xm~ NOT ON THE CORNERS.


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AKE SURE DIVOTS ARE ALIGNED




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                                                                                   ~
                                 DINAN ENGINEERING PERFORMANCE CHIP INSTALLATION
                                                  FOR MOTRONIC—2
                                 1988 Porsche 92457944 BOSCH ECU #*0—261—200—086

               Thank you for purchasing a Dinan Engineer Ing performance chip. Many hours of research and
               development have gone tnto sach program to optimize iqnition and fue! delivery curves for
               maximum power.

               Some mechantcal skill is required to perform this operation. If you feel that you do not possess
               the required skill plaese arrange to have a qualified repair factiity do the instaliation for you.

               If you encounter any difficulties dur ing this installation or 1f these instructions are not clear 10
              you please call Dinan Engineering for assistance @ 415—962—9417.


              TOOLS REQUIRED FOR INSTALLATION:

              ~Phthips screwariver (small)
              —Standard screwdriver (small)
              ~Standard screwdriver (packet size)
              —B8mm socket on 328 or 1/4 drive ratchot with 2" extension                                |.
              —Blunt nose pliers (medium}

              REMOVE ELECTRONIC CONTROL UNIT (ECU) FROM YERICLE:

               1. Open drivers door. The ECU is located under the deshboard at the steer ing column.

              2. Remove the phtiHips screws seour ing the black plastic cover which conceals the ECU. Remove
              the four &mm nut which secure the ECU to the chassis.

              3. Let the ECU drop down and unplug the wiring harness from 1L. Take ECU to workbench,


              ON THE WORKBENCH:

              4. Read Bosch part number on ECU. Should be:

                                          0—261—200—086



               If your computer does not display one of these part numbers call Dinan Engineer ing €
               415—962—9417. DO NOT install the power chip!


                                                                                                                                                                     dtm:
wngn crvor smmmoge sgnc d onsns imenmm crgnimpe o n ranenpermermine emingrome snimmnggenemm
                                                                                   —                ww monsmercimne t commc =— mc nenvie i in anenevemme ommen ermer
                                                                                            w cemmmmnrer




                 5. See figure 1. Place ECU on workbench with part number labe? face down and using the pocket
                 screwdriver pry the ten lock tabs that hold the unit together up slightly. Just encugh to get the
                 small screwdriver under the tabs and finish prying the tabs straight up. Separate case, set
                 Cover aside.

                  6. See Tigure 2 and figure 3. Hold ECU with metal side down and the plug and facing away. Grip
                  mounting tabs with both hands and push up on upper printed ciroutt (PC) board where the two
                  plastic pedestals connect to the PC board. The object hare is to separate the pecestal snap
                  connections. Cautiont DO NOT PUSH UP ON CORNERS OF PC BOARD OR BOARD WiILL
                  FLEX AND BREAKI

                  7. Raise rear portion of board which was just unsnapped and slide board away from plug, until
                  the board disengages from the plug housing. Flip over upper PC board so that both PC boards are
                  face up.

        ,         8. See figure 4. Find socketed chip on the upper board. This chip can be identified by a sticker
                  with a ser tes of numbers printed on it and that 1t ts etevated higher than any simfiar chip on the
                  bosrd.

                  9. Remove chip from socket by inserting the pocket screwariver between the cnip and the socket
                  and prying up gently. Pry up in stages switching ends as you go until the chip is totally loose. Set
                  stock chip aside.

                   10. See figure 5. Notice the small divot on one end of the power chip. Notice a stmtlar divat on
                  one end of the socket. The chip must be inserted so that both divots are on the same side. First
                  insert ong row of pins in one side of the socket part—way. With two fingers push on the other
                  side of the chip unt1l the other row of pins line up with the socket and then push down on chip.
                  Use your othar hand to support the bottom side of the PC board directly below the socket while
                  you push down on chip to make sure that it is inssrted all the way. Cautiont BE CAREFUL
                  NOT TO BEND ANY PINS.
                  Visually verify that all the pins are in a socket hole and that all socket holes are Aled with pins.

                   11. Reassemble PC boards. Reinstall cover on ECU making sure to insert the white plastic sheet
                  first. Use pliers to bend cover lock tabs back into place. Install ECU in vehicle.


   «              This chip Increases spark advance. This makes It necessary to
                  run Supreme Unijeaded Fuel, 91 octane or better.

                  The information contained on this chip is the sole property of
                  Dinan Engineering and its reproduction is unlawful. Dinan
   (              Engineering will prosecute to the full extent of the law.


                  *Smog Legal® in California under; ARB E.0. No. O—XXX


                                                                                             eparver   wune«:   uruenngs ym sw   cuevns
      hy                         hm m enminany. goinere marner se certwnmem zen   mpucy mm
NMOHS S¥ SEVL X¥D90T7 dn. UN3Y


         a




   ORIP MOUNTING Tars AaND push up on urper PC Boarp.
PusH UP WHERE PLASTIC PEDESTALS ARE, NOT ON THE CORNERS.




                       umt i))


dxwof NO NOoTLYJOT d4IH]   _ Jangt4


                                                     AKE SURE DIVOTS ARE ALIGNED
                                                                                   CHIp
                                                                                          rIDUKE9




arvtriedilimencess sivicecasvmanedin ccom.contcn s


                                                                                       Co2 un cce cenecue ers eawecs
                                                r ind ce
m mew awe kn y n may w ce cammene in evemernnme




                                     DINAN ENGINEERING PERFORMANCE CHIP INSTALLATION
                                                   MOTRONIC— 3 Y¥ersion 3
                                         1990—> 318is BOSCH ECU #0—261—200— 175


                    Thank you for purchasing a Dinan Engineering power chip. Many hours of research and development
                    have gone into each program to optimize ignition and fuel delivery curves for maximum power.

                    Some mechanical skill is required to perform this operation. if you feel that you do not possess
                    the required skill please arrange to have a quahified repair Tacility do the installation for you.

                    if you encounter any difficulties during this installation or if these instructions are not clear to you
                    please call Dinan Engineering for assistance @ 415—962—9417.

                    TOOLS REQUIRED FOR INST ALL ATION:

                    ~Phillips screwdriver (medium)
                    —Standard screwdriver (small)
                    —Standard screwdriver (pocket size)
                    ~10mm socket on 378 or 174. drive ratchet with 2" extension
                    —*®20 "TORX" wrench/drive
                    —Blunt nose pliers (medium)

                    REMOVE ELECTRONIC CONTROL UNIT (ECU) FROM VEHICLE :

                     1. Open glove box, remove pins securing limiting straps to sides of glove box and allow glove box to
                     open all the way.

                     2. Remove the fasteners securing plastic glove box roof panel. Pull this panel down and allow it to rest
                     in the glove box.

                     3. Remove wiring harness from ECU by pulling on the metal latch mechanism. Loosen (do not remove}
                     the four 10mm nuts securing the metal plate underneath the ECU. With the nuts sufficiently loose the
                     ECU should stide out. T ake ECU to the workbench.



                     OM THE WORKBENCH:

                     4. Read Bosch part number on ECU. Should be :

                                          0—261—200—175

                      If your computer does not display this part nurmber call Dinan Engineering @ 415—962—9417. DO NOT
                      install the power chip!


                           ~~    Q e ol cce o en ce w acubcnesmnves gene anmacore




5. Place £CU on the workbench with part number label face up and remove the four #20
torx screws securing the cover of the case.

6. See figure 1. Place ECU on workbench with part number label face down and using the pocket
screwdriver pry the six lock tabs that hold the unit together up slightly. Just enough to get the small
screwdriver under the tabs and finish prying the tabs straight up. Separate case, set cover aside,

7. See figure 2. Find the socketed chip on the board. This chip can be identified by the plastic "H*
shaped retaining clip locking it into the socket and that it is elevated higher than any similar chip on the
board.

8. See figure 3. Retove the "H" shaped retaining clip by inserting the pocket screwdriver into one of
the small slots in the retaining clip and prying towards the other slot. The retaining clip will pop up on
the side the sorewdriver is inserted in, use a finger to hold that side up while you insert the
screwdriver in the other slot and release the other side. Lift retaining clip off of the chip and set aside.

9. Remove chip from socket by inserting the pocket sorewdriver between the chip and the socket and
pry ing up gently. Pry up in stages switching ends as you go until ie chip is totally loose. Set stock chip
aside.

10. See figure 4. Notice the small divot on one end of the power chip. Notice a similar divot on one end
of the socket. The chip must be inserted so that both divots are on the same side. First insert one row of
pins in one side of the socket part—way. With two fingers push on the other side of the chip until the
other row of pins line up with the socket and then push down on chip and make sure that it is inserted all
the way. Caution! BE CAREFUL NOT TO BEND ANY PINS.
Visually verify that all the pins are in a socket holeand that all sooket holes are filled with pins.

12. Reinstall retaining clip. Reinstall cover on ECU; use pliers to bend cover lock tabs back into place.
Install the four sorews removed in step 5. Install ECU in vehicle.



The 318is requires supreme unleaded fuel in the stock form.
Supreme unleaded must be used with the power chip. As with
the stock vehicle, if supreme is not used, engine damage may
result.

The information contained on this chip is the sole property of
Cinan Engingering and its reproduction is unlawful. Dinan
Engingering will prosecute to the full extent of the law.



"Smog Legal" in California under; CARB E. 0. No. D—XXX


[\6

/
E/
&


                FIGURE 2




SOCKETED CHIP


IGuRE 3                                                             FIGURE 4

                            |_ery This way uNTIL CLIP pops uP [Ri
                       ()     TT uie .

ocket screworiver—>| Y

                      e
                       i                                                               )
                                                                                              CHIP

                                                                    MAKE SURE DIVOTS
                                                                    ARE ALIGNED

                                                                                           SockET
              sLots
   e f                Vn
     _
   TOP VIEW           SIDE VIEW



Document Created: 2005-09-01 12:42:33
Document Modified: 2005-09-01 12:42:33

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