Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on July 10, 1997.
As of Thursday, October 17th, 2019 this Executive Order has not been overturned or superceeded.

Approved Parts

Models
1984-1995 4.3L, 1986-1995 5.0L, 1986-1995 5.7L, 1987-1995 7.4L GM C/K series Trucks, Vans, Blazer, and Suburban vehicles equipped with throttle body injection (TBI), EXCEPT those equipped with OBD II system.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-435
  • Executive Order 435 / D435
  • ARB # D-435
  • Executive Order No: D-435
  • C.A.R.B. No. D-435
  • Resolution D-435
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-435 PDF

D-435 Document:



                                                                              (Page 1 of 2)

                                              State of California
                                            AIR RESOURCES    BOARD

                                          EXECUTIVE ORDER D—435
                               Relating to Exemptions Under Section 27156
                                           of the Vehicle Code


                                             T & T PERFORMANCE
                                           "TBI RISER PLATE KIT"

       WHEREAS, Vehicle Code Sections 27156 and 38391, and Title 13, California Code of
      ‘Regulations (hereafter "CCR") Section 2222(e), authorize the California Air
       Resources Board (ARB) and its Executive Officer to exempt add—on and modified
       aftermarket devices from the prohibitions of Vehicle Code Section 27156.

      WHEREAS,   T & T Performance of     181 Industrial Way,    P.O.   Box 1994,   Buellton,
      California 93427, has applied to the ARB for exemption from the prohibitions in
      Vehicle Code Sections 27156 and 38391 for their TBI Riser Plate Kit for the
      following application:

      Vehicle Model—year           Engine Displacement
      1984 — 1995                  4.3L (262 CID)}
      1986 — 1995                  5.0L   (302 CID)
      1986 — 1995                  5.7L   (350 CID)
      1987 — 1995                  7.4L (454 CID)
      WHEREAS, pursuant to the authority vested in the Executive Officer by Health and
      Safety Code Section 39515 and in the Chief, Mobile Source Operations Division by
      Health and Safety Code Section 39516 and Executive Order G—45—9, the ARB finds that
29M




      the above add—on device complies with the California Vehicle Code Section 27156 and
      Title 13, California Code of Reqgulations. Emission performance of the TBI Riser
      Plate Kit was based on cold—start CVS~75 tests conducted at an independent vehicle
      test laboratory.

      It has not been determined what effect use of the TBI Riser Plate Kit may have on
      any warranty,     either expressed or implied,      by the manufacturer or a motor vehicle on
      which the device is installed.

      IT IS HEREBY RESOLVED that the above TBI Riser Plate Kit is exempt from the
      prohibitions in Vehicle Code Section 27156 for installation on the approved
      application vehicles subject to the following conditions:

       1.    No changes are permitted to the TBI Riser Plate Kit device as described in the
             application for exemption.       Any changes to the TBI Riser Plate Kit or any of
             its components, and other factors addressed in this order must be evaluated and
             approved by the ARB prior to marketing in California.

       2 .   Marketing of the TBI Riser Plate Kit using identification other than those
             shown in this Executive Order or marketing of the TBI Riser Plate Kit for
             application other than the one listed in this Executive Order shall be
             prohibited unless prior approval is obtained from the ARB.  Exemption of this
             product shall not be construed as an exemption to sell,          offer for sale,   or
             advertise any components of the TBI Riser Plate Kit device as individual
             devices.

       3.    Any oral or written references to this Executive Order or its content by T & T
             Performance,   its principals,    agents,   employees, distributors,    dealers, or other
             representatives must include the disclaimer that the Executive Order or the
             exemption it provides is not an endorsement or approval of any emissions
             reduction claims for the TBI Riser Plate Kit and is only a finding that the TBI
             Riser Plate Kit is exempt from the prohibitions of Vehicle Code Sectien 27156.


T & T PERFORMANCE                                    EXECUTIVE ORDER D—435
"TBI RISER PLATE KIT"                                (Page 2 of 2)
                                 >


4.   Should the installation of the TBI Riser Plate Kit on applicable vehicles be
     determined to result in unacceptable emission increase or cause adverse effect
     on pollution control systems of the vehicles, the ARB may require T & T
     Performance to conduct specific tests in order to determine the levels of
     emissions increase.  Should such tests show excessive emission increase, T & T
     Performance may be required to cease.and desist from marketing the device in
     California, and this exemption may be rescinded, in accordance with established
     procedures.

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 THE TBI
RISER PLATE KIT.

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 it, during 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 is made, after the hearing, that grounds for revocation exist.

Executed at El Monte,   California,   this    10 of July 1997.




                                             Eummerfielda, AChief
                                             e Ssource Operations Division


                                State of California
                                AIR RESOURCES   BOARD




       EVALUATION OF T & T PERFORMANCE TBI RISER PLATE KIT FOR EXEMPTION FROM
          THE PROHIBITIONS IN VEHICLE CODE SECTION 27156, AND SECTION 2222
                     OF TITLE 13, CALIFORNIA CODE OF REGULATIONS




                                     July 1997
cas.


          EVALUATION OF T & T PERFORMANCE TBI RISER PLATE KIT FOR EXEMPTION FROM
             THE PROHIBITIONS IN VEHICLE CODE SECTION 27156, AND SECTION 2222
                        OF TITLE 13, CALIFORNIA CODE OF REGULATIONS




                                             by
                             Mobile Source Operations Division

                                    9528 Telstar Avenue
                                 El 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.)
m


                                                              SUMMARY



                         T & T Performance of 181 Industrial Way,               P.O.   Box 1994,   Buellton,

           California 93427, has applied for an exemption of their Throttle Body Injection

           Riser Plate Kit        (TBI Riser Plate Kit),          from the prohibitions in Vehicle Code        (VC)

           Sections 27156 and 38391,          in accordance with Section 2222 of Title 13,             California

           ‘Code of Regulations (CCR).          The TBI Riser Plate Kit is designed for installation on

           General Motor        (GM)   C/K series Trucks,     Vans,   Blazer,   and Suburban vehicles equipped

           with Throttle Body Injection (TBI), excluding those equipped with OBD II system.

           The vehicles include the following model—years and engine displacement:

           Vehicle Model—year                Engine Displacement
           1984 — 1995                       4.3L (262 CID)
           1986 — 1995                       5.0L   (302 CID})
           1986   —   1995                   5.7L   (350   CID)
           1987 — 1995                       7.4L (454 CID)
           The TBI Riser Plate Kit is designed to raise the TBI unit above the intake manifold.

           The applicant claimed that by raising the TBI unit off the intake manifold, the

           velocity of the air intake will be increased.                  The increase in velocity of the air
Lonien,,




           intake will cause the atomization of the air—fuel mixture for more efficient

           combustion.         The result will be increase in torque,           horsepower,   and reduction in

           emissions.

                             Tests conducted at an independent laboratory showed that the device has

           met the requirements under California procedures for VC Section 27156 exemption of

           add—on and modified parts.           Based on the independent laboratory test results,              the

           staff recommends that the exemption be granted as requested and that Executive Order

           No.    D—435 be issued to enable T & T Performance to market the TBI Riser Plate Kit in

           California.


                             coNTENTS

                                        Page Number

        SUMMARY                              i

        coNTENTS                            ii

        INTRODUCTION

II.     coNCLUSION

"III.   RECOMMENDATION

IV.     DEVICE DESCRIPTION

v.      BEVICE EVALUATION




                                i1


                EVALUATION OF T & T PERFORMANCE TBI RISER PLATE KIT FOR EXEMPTION FROM
                   THE PROHIBITIONS IN VEHICLE CODE SECTION 27156, AND SECTION 2222
                              OF TITLE 13, CALIFORNIA CODE OF REGULATIONS

         I.            INTRODUCTION
evkin.




                    T & T Performance of 181 Industrial Way,         P.O.   Box 1994,   Buellton,

         California 93427,    has applied for an exemption from the prohibitions in Vehicle Code

         Sections 27156 and 38391 for their TBI Riser Plate Kit,            in accordance with Section

         2222 of Title 13, California Code of Regulations (CCR).            The TBI Riser Plate Kit is

         an add—on spacer plate designed to raise the TBI unit above the intake manifold and

         increase the velocity of intake air to achieve better atomization of air—fuel

         mixture.   The TBI Riser Plate Kit is designed for the following application:

         Vehicle Model—year             Engine Displacement
         1984 — 1995                    4.3L (262 CID)
         1986 — 1995                    5.0L (302 CID)
         1986 — 1995                    5.7L (350 CID)
         1987 — 1995                    7.4L (454 CID)

         II.           CONCLUSION

                       The applicant has submitted data from testing conducted at the Automobile

         Club of Southern California       (ACSC)   Laboratory in Los Angeles,   California.       Based on

         the applicant‘s submitted exhaust emissions test data from ACSC, the staff concludes

         that the TBI Riser Plate Kit meets the criteria set forth in Vehicle Code Section

         27156 and Title 13,    California Code of Requlations,      Section 2222    for the stated

         application.

         III.          RECOMMENDATION

                       Staff recommends that the exemption'be granted as requested and that

         Executive Order No.    D—435 be issued,      permitting the advertisement,      sale,   and

         installation of the TBI Riser Plate Kit on applicable vehicles.

         IV.           DEVICE DESCRIPTION

                       T & T Performance‘s TBI Riser Plate Kit is an aluminum spacer plate

         designed to raise the TBI unit above the intake manifold about 1.300              inches.     The

         TBI Riser Plate Kit consists of the aluminum spacer,         two gaskets,      mounting bolts,

         throttle linkage spacers,       and fuel line fitting extensions.       The applicant claimed

         that raising the TBI unit 1.300 inches above the intake manifold will increase the

         velocity of intake air;      however,   the increase in velocity was not       specified

         quantitatively.     The applicant further claimed that an increase in intake air

         velocity will result in better atomization of air—fuel charge and complete

         combustion.     The installation of the device will,      therefore,    result in increased

         torque, horsepower, gas mileage, afid emissions reduction.             Test results from the

         ACSC laboratory and confirmatory tests conducted by the Air Resources Board (ARB)

         did not show sufficient consistency to confirm the applicant‘s claims.


v.          DEVICE EVALUATION

            T & T Performance submitted data from testing conducted by Automobile

Club of Southern California Research Laboratory             (ACSC),     an independent private

laboratory in Los Angeles,       California.      The test vehicle was a 1995 Chevrolet C1500

V6 Pickup Truck powered by a 4.3L engine.              One cold—start CVS—75 test was performed

in baseline confiqguration followed by one cold—start CVS—75 test with the TBI Riser

Plate Kit installed    (modified configqguration}.         Upon completion of testing at the

independént laboratory,        the test vehicle was erroneously released to the applicant

prior to confirmatory tests at the ARB.             The applicant drove the truck about 140

miles to Buellton.     In order for the ARB to perform confirmatory testing,              the

applicant drove the truck approximately 155 miles to ARB‘s Haagen—Smit Laboratory in

El Monte,   California,    prior to the baseline test.         One cold—start CVS—75 test was

performed in baseline confiqguration,          followed by two cold—start CVS—75 tests with

TBI Riser Plate Kit installed.         The two device tests were averaged and then used for

comparison with the baseline test.            Data from the tests are shown below.

                                     ACSC Research Laboratory
                                      Los Angeles, California

4. 3L Chevrolet C1500 Pickup Truck
                               NMHC               co           NOx
Baseline Test        (g/mi)          0.266       2 .227       0.633
Device Test          (g/mi)          0 .361      2.806        0 .623
Change               (g/mi)         +0.095      +0 .579      —0.010
Change               (%)            +35 .7      +26          —1.6

                                      Haagen—Smit Laboratory
                                       El Monte, California

Baseline             (g/mi)          0.303        4.061        0 .714
bevice Test 1        (g/mi)          0. 423       4.685        0. 668
Device Test 2        (g/mi)          0 .421       4 .888       0.722
Average of 1 & 2     (g/mi)          0.422        4.786        0 .695
Change               (g/mi})        +0.119       +0 .725      —0 .019
Change               (%)            +39 .3       +17 .8       —2 .7
                                                                                                     +
Test results from ACSC show that the emission increases in HC and CO are below the

acceptable maximum increase in 0.1l g/mi and 1.0 g/mi,                respectively.   Results from

Haagen—Smit Laboratory show emission increase of HC of 0.119 g/mi, which is 0.019

g/mi above acceptable increase.          However,      staff believes that operation of the test

vehicle for approximately 300 miles prior to the confirmatory tests may have

contributed to the significant difference between the baseline and device HC

emission levels.     An appropriate procedure would have been to accumulate similar

mileage prior to the device test.             However, due to time constraints, the ARB cannot

conduct the mileage accumulation.             In view of the above,      staff recommends that T & T

Performance be granted a Vehicle Code Section 27156 Exemption based on test results

from ACSC Research laboratory.



Document Created: 2005-09-01 11:46:19
Document Modified: 2005-09-01 11:46:19

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