Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on November 4, 1997.
As of Tuesday, December 18th, 2018 this Executive Order has not been overturned or superceeded.

Approved Parts

Models
1994- 1997 Ford pickup vehicles equipped with 7.3L Navistar International Powerstroke heavy-duty diesel engines

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-171-9
  • Executive Order 171-9 / D171-9
  • ARB # D-171-9
  • Executive Order No: D-171-9
  • C.A.R.B. No. D-171-9
  • Resolution D-171-9
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-171-9 PDF

D-171-9 Document:



                                                           (Page 1 of 2)

                                   State of California
                               AIR RESOURCES BOARD


                            EXECUTIVE ORDER D—171—9
                      Relating to Exemptions Under Section 27156
                                   of the Vehicle Code


                     ADVANCED TURBO SYSTEMS, INC.
               ATS WASTEGATED TURBINE HOUSING ASSEMBLY


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

Pursuant to the authority vested in the undersigned by Section 39515 and Section 39516
of the Health and Safety Code and Executive Order G—45—9;

IT IS ORDERED AND RESOLVED: That the instailation of the ATS Wastegated
Turbine Housing Assembly manufactured by Advanced Turbo Systems, Inc. of 5919
South 350 West, P.O. Box 57547, Murray, Utah 84107, 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 the 1994—1997
Ford Motor Company pickup vehicles installed in 7.3L Navistar International
Powerstroke heavy—duty diesel engine.

This exemption shall not apply to any device, apparatus, or mechanism advertised,
offered for sale or sold with, or installed on, a motor vehicle prior to or concurrent with
transfer to an ultimate purchaser.

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

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

Marketing of this device using any 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.

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


ADVANCED TURBO SYSTEMS, INC.                                EXECUTIVE ORDER D—171—9
ATS WASTEGATED TURBINE HOUSING                              (Page 2 of 2)


The ARB finds that reasonable grounds exist to believe that use of the ATS Wastegated
Turbine Housing Assembly 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 tests results demonstrate that the ATS
Wastegated Turbine Housing Assembly adversely affect 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 os the date the test results are validated. Further, if such test results or
other evidence provides the ARB with reason to suspect that the ATS Wastegated
Turbine Housing Assembly will affect the durability of the emission control system,
Advanced Turbo Systems, 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.

THIS EXECUTIVE ORDER DOES NOT CONSTITUTE A CERTIFICATION,
ACCREDITATION, APPROVAL, OR ANY OTHER TYPE OF ENDORSEMENT BY
THE AIR RESOURCES BOARD OF ANY CLAIMS OF THE APPLICANT
CONCERNING ANTI—POLLUTION BENEFITS OR ANY ALLEGED BENEFITS OF
ADVANCED POWER SYSTEMS, INC‘S WASTEGATED TURBINE HOUSING
ASSEMBLY.

No claims 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.

Violation of any of the above conditions shall be grounds for revocation of this order.
The order may be revoked only after ten day written notice of intention to revoke the
order, in which period the holder of the order may request in writing a hearing to
contest the proposed revocation. If a hearing is requested, it shall be held within ten
days of receipt of the request and the order may not be revoked until a determination
after hearing that grounds for revocation exist.           '

Executed at El Monte, California, this        E%/\day of November, 1997.




                                          .    B7 Spyfhmerfield,   #hief
                                         Mobile Source Operations Division


                  State of California
                  AIR RESOURCES BOARD




  EVALUATION OF ADVANCED TURBO SYSTEMS, INC.‘S WASTEGATED
          TURBINE HOUSING ASSEMBLY FOR 1994—1997 FORD
        MOTOR COMPANY PICKUP TRUCKS POWERED BY A 7.3L
NAVISTAR POWERSTROKE HEAVY—DUTY DIESEL ENGINE FOR EXEMPTION
     FROM THE PROHIBITIONS OF VEKICLE CODE SECTION 27156
        IN ACCORDANCE WITH SECTION 2222, TITLE 13, OF
               THE CALIFORNIA CODE OF REGULATIONS




                      November, 1997


                            State of California
                            AIR RESOURCES BOARD




            EVALUATION OF ADVANCED TURBO SYSTEMS, INC.‘S WASTEGATED
                  TURBINE HOUSING ASSEMBLY FOR 1994—1997 FORD
                 MOTOR COMPANY PICKUP TRUCKS POWERED BY A 7.3L
          NAVISTAR POWERSTROKE HEAVY—DUTY DIESEL ENGINE FOR EXEMPTION
              FROM THE PROHIBITIONS OF VEHICLE CODE SECTION 27156
                 IN ACCORDANCE WITH SECTION 2222, TITLE 13, OF
                       THE CALIFORNIA CODE OF REGULATIONS




                                      by
                      Mobile Source Operations Division
                            9528 Telstar Avenue
                            El Monte, CA   91734—8001



{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



             Advanced Turbo Systems, Inc. (ATS) of 5919 S. 350 W., Murray, Utah

84107, has applied for exemption from the prohibitions in Section 27156 of the

California Vehicle Code for their Wastegated Turbine Housing Assembly.        The

ATS Wastegated Turbine Housing Assembly is designed for installation in 1994—

1997 Ford pickup trucks powered by a 7.3L Navistar Powerstroke heavy—duty

diesel engine.

             ATS has submitted a complete application with all the required

information.     Based on an engineering evaluation of the functional test data

submitted from steady—state heavy—duty chassis dynamometer testing, the staff

concludes that ATS, Inc.‘s Wastegated Turbine Housing Assembly will not

adversely affect exhaust emissions from vehicles for which an exemption is

requested.

         The staff recommends that Advanced Turbo Systems, Inc. be granted an

exemption from the prohibitions in Vehicle Code Section 27156 and that

Executive Order D—171—9 be issued.


                                  TABLE OF CONTENTS




                                                      Page Number



SUMMARY
CONTENTS                                                  i1

I.        INTRODUCT ION
II.        CONCLUSION
III.      RECOMMENDATION
IV.    DEVICE DESCRIPTION
v.     DISCUSS ION
APPENDIX
          INSTALLATION INSTRUCTIONS




                                       1i


        EVALUATION OF ADVANCED TURBO SYSTEMS INC.‘S WASTEGATED TURBINE
        HOUSING ASSEMBLY FOR 1994—1997 FORD MOTOR COMPANY PICKUP TRUCKS
          POWERED BY A NAVISTAR 7.3L POWERSTROKE HEAVY—DUTY DIESEL
         ENGINE FOR EXEMPTION FROM THE PROHIBITIONS OF VEKICLE CODE
                 SECTION 27156 IN ACCORDANCE WITH SECTION 2222,
                TITLE 13, OF THE CALIFORNIA CODE OF REGULATIONS


I.           INTRODUCTION

             Advanced Turbo Systems, Inc. (ATS) of 5919 S. 350 W., Murray, Utah

84107, has applied for an exemption from the prohibitions of Vehicle Code

Section (VC) 27156 for their Wastegated Turbine Housing Assembly.        The

Wastegated Turbine Housing Assembly is designed for installation on 1994—1997

Ford Motor Company pickup trucks powered by a 7.3L Navistar Powerstroke heavy—

duty diesel engine.        ATS has submitted functional test data obtained from

steady—state heavy—duty chassis dynamometer testing conducted on a 1996 model—

year California certified 7.3L Navistar heavy—duty diesel engine.



II.          CONCLUSIONS

             Staff conducted an engineering evaluation and based on the test data

submitted by ATS, the staff concludes that the ATS Wastegated Turbine Housing

Assembly will not have any adverse effects on the exhaust emissions from the

engine for which the exemption is requested.


III.         RECOMMENDATION
             The staff recommends that Advanced Turbo Systems, Inc. be granted an

exemption from the prohibitions in California Vehicle Code Section 27156 for

the 1994—1997 model—year Ford Motor Company pickup trucks powered by a 7.3L

Navistar Powerstroke heavy—duty diesel engine and that Executive Order D—171—9

be issued.


IV.       DEVICE DESCRIPTION
          The ATS Wastegated Turbine Housing Assembly is designed for

installation on 1994—1997 Ford Motor Company pickup trucks powered by a 7.3L

Navistar Powerstroke heavy—duty diesel engine.   The subject housing assembly

is a direct replacement for the stock unit except that it incorporates a

smaller turbine nozzle and a wastegate control unit to limit maximum boost.

ATS uses an Allied Signal Turbocharger, model number TP38.   The dimensions of

the replacement turbocharger turbine housing has been changed from those of

the OEM turbocharger.   The turbine nozzle area (A) and the distance from the

center of the turbine wheel to the centroid of area (R) of the replacement

turbocharger have been reduced, decreasing the A/R ratio from 1.15 to 1.00.

The smaller turbine nozzle allows a faster boost rise which increases the
turbine inlet gas velocity at lower engine speeds.   By providing a faster

boost rise during transient accelerations, more air (boost) is available for

the combustion process thereby assuring more complete burning of the fuel.

Ultimate boost level is then controlled by the wastegate which protects the

engine from being exposed to excessive cylinder pressures.   Additionally, the

smaller nozzle housing allows the turbocharger housing to accelerate faster

thereby providing improved engine response and reduced snap—idle smoke.     The

manufacturer claims adding the wastegate would improve driveability and

emission performance.   Engine horsepower remains the same since there is no

change in maximum fuel delivery.   Utilizing the ATS Wastegated Turbine Housing

Assembly would improve low—end acceleration characteristics while retaining

the original maximum power rating. The manufacturer states there are no

modifications or alterations to the OEM‘s engine management control system or

power rating.


V.        DISCUSSION
          Advanced Turbo Systems, Inc. has requested an exemption for the

1994—1997 Ford Motor Company pickup trucks powered by a 7.3L Navistar

Powerstroke heavy—duty diesel engine.    The ATS Turbine Housing Assembly is the

same as the OEM except for a smaller turbine nozzle which allows for a faster

boos£ at lower engine speeds and a wastegate that lTimits maximum boost during

accelerations.   These changes are intended to improve the response of the

turbocharger and reduce the time between the opening of the throttle and the

turbocharger reaching operating speed.   The reduction of the turbo lag time

could decrease hydrocarbons and particulate emissions by reducing the duration

of the oxygen shortage.   The difference in the turbo lag time between the OEM

turbo and ATS‘s turbo with wastegate is not sufficient to increase the

combustion temperature.   Also, faster response of the turbocharger, for short

durations, during low end acceleration would not impact NOx emissions since

there will be no sufficient increase in the combustion temperature.        The ATS

Turbine Housing Assembly for the older 7.3L Navistar heavy—duty diesel engines

are similar to those present on newer model—year California—certified 7.3L

Navistar heavy—duty diesel engines equipped with a turbocharger and wastegate.



          ATS submitted torque and horsepower curves for vehicles equipped

with the ATS turbo system and the stock configuration.   The testing was

performed on a heavy—duty truck dyno with a 1996 California—certified 7.3L

Navistar heavy—duty diesel engine.   This data supports the manufacturer‘s

claim that the purpose of the ATS Turbine Housing Assembly is to improve low—

end engine performance while retaining the original power rating.     In

addition, by providing a faster turbo response during low—end acceleration

there should be no impact on exhaust emissions.


The 1997 model—year 7.3L Navistar heavy—duty diesel engine is a carry—over

from previous model—years.   Therefore, the ATS Turbine Housing Assembly will

have no adverse emissions effect on the engines for which exemption is

requested.


APPENDIX


January .7,   1997                POWERSTROKE
              WASTEGATED TURBO HOUSING INSTRUCTION



READ THROUGH INSTRUCTIONS BEFORE INSTALLING



1. Remove engine shroud.
   Remove the three acorn nuts that hold the engins shroud on.
   Remove   the           turbe   air   inlet       hose,        with   a   flas   bladed
   screwdriver.

   Remove the stock pressure chamber "¥"
   Using a flat bladed screwdriver.  Loosen the four rose
   clamps on the Rump hoses, Next loosen the V band clamp
   which holds the pressure chamber to the turbo.  Remove
   pressure chamber along with the hump hoses from the
   engine.    CAUIION: _DQ_NOT LOSZ TER Q‘RING wHICH SEALS THZ
    URRO TCO THE PEESSIRE CRIMRER


   Remove ATS Pressure Chamber "Y"
   (Only if equipped with ATS Intercooler System)
   Using a flat bladed screwdriver loosen the two clamps on
   passenger side pips and remove pipe. Next loosen the four
   clamps on hump hoses and remove ATS pressure chamber "Y"
   and hump hoses, then loosen the V clamp ard clamp on
   drivers side pipa and removs.   CAUTION:DCNOTLOSFETHE
     ‘RING WHIC           SAL     [             2
                                                2           DE    TDR



   Remove Turbo,
   Remove the marmon (V band clamp)                 that holds the final
   exhaust, using a 7/1§$" deep socket with extension and
   rarchet.         Unkook the rod that controls the butterfly in
   discharge housing, slide collar over and rod will pop off,
   then remove the three tweive point 5/i6 bolts holdirg the
   discharge housing to the turbo, using a 5/16 twelve point
   combinaticn wrench or twelve point socket with extension
   and ratchet.   Remove the two lOmm bolts using a l3mm flex
   socket with extension and rakchet,.                 Remove the two 10mm
   nuts using a l§mm combination wrench, which holds tha
   turke housing to the turbo inles feed flenge, then remove
   the four $mm bolits holding the turbo to the engine, using
   a lOmm flax socket with extension and ratchet, then remove
   turbo from engine.             NOT_DRAMAGE
     STURN    _G!     c


5. Remove Turbline Eousing.
   Remove the four 5/16" twelve point bolits that hold the
  turbine housing to the turbo.            Using a 5/16" twelve poins
  compimnation wrench, then remove housing ard clean all
  surfaces.

   Ingtall New Wastegated Turbine housing.
   Install the new wastegated turbine housing on turso,
   using Anfi—seize on the four 5/16" twelve point bolts and
   tighcen.

   Install Turbo
   Set turbo on engine.     Re—install ths four smm bolts and
   tighten using LlOftm flex sockes with excension and rarchet.
   Using Anti—seize on bolts and nuzs.     Tighten the two l0mm
   bolts with a 13mm flex socket, extension and ratchet, then
   tighzen the two 10mm nuts with a i§mm combiration wrenck.
   Install discharge housing, coating the three §5/16" twelve
   point bolts with Anti—seige and tighten,  Hook up
   butterfly rod and re—instail marmon V band clamp, tighter
   with 7/16" deep socket and ratchet.

   Install stodk pressure chamber "Y"
   Grease o—ring and install in grove on turbe port.                  Set
   pressure chamber in place, using a flat bladed screwdriver
   tighten up clamps on hump Roses and V clamp on
   turbo pork.   Install curbe air inlet hose, tighten both clamps
   with flat bladed screwdriver.

   Install Wastegate Hose with Stock Preesure Chamber "¥"

   Cut the stock hose connection between the intake manifold pressur sensing port
   and the stock MAP sensor on the firewall and install the supplied barbed "I" fitting
   and clomps. Attach the remaining leg of the "T" fitting to the barbed fitting on the
   by—pass turbine housing actuator utilizing the supplied hose and cleamps.


10.Start engine and check for leaks

l1.Ingtall engime shroud (NON INTERCOOLED)
   set shroud in place and tighten the three acorn nuts.



Document Created: 2005-09-01 12:39:42
Document Modified: 2005-09-01 12:39:42

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