Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on February 21, 2002.
As of Sunday, June 16th, 2019 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModels
305-05-01401992-1993 ACURA INTEGRA GSR

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-537
  • Executive Order 537 / D537
  • ARB # D-537
  • Executive Order No: D-537
  • C.A.R.B. No. D-537
  • Resolution D-537
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-537 PDF

D-537 Document:



                                           .       State of California
                                               AIR RESOURCES BOARD

                                               EXECUTIVE ORDER D—537

                                    Relating to Exemptions Under Section 27156
                                               of the California Vehicle Code

                                                  Group—A Autosports
                                          Skunk2 Racing VTEC Camshaft

             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 I1S ORDERED AND RESOLVED: That the installation of the Skunk2 Racing VTEC
              Camshaft, produced and marketed by Group—A Autosports, 25710 Industrial Bivd. # 2,
            ~ Hayward, California 94545, has been found not to reduce the effectiveness of the
              applicable vehicle pollution control systems and, therefore, is exempt from the
              prohibitions of Section 27156 of the Vehicle Code for the Acura and Honda vehicles
              listed in Exhibit A.
_awns.,




             The Skunk2 Racing VTEC Camshaft is manufactured with different opening crankshaft
             angles, duration, and lift of intake and exhaust valves from those of the stock camshaft
             in order to allow the engine to produce more power. The manufacturer, Group—A
             Autosports, recommends an ignition timing setting of 16—17 degrees before top dead
             center.                                                      f

             This Executive Order is valid provided that the installation instructions for the Skunk2
             Racing VTEC Camshaft will not recommend tuning the vehicle to specifications different
             from those of the vehicle manufacturer, besides the ignition timing setting mentioned
             above.

             Changes made to the design or operating conditions of the Skunk2 Racing VTEC
             Camshaft, as exempt by the Air Resources Board, which adversely affect the
             performance of the vehicle‘s pollution control system shall invalidate this Executive
             Order.

             This Executive Order shall not apply to any Skunk2 Racing VTEC Camshaft advertised,
             offered for sale, sold with, or installed on a new motor vehicle prior to or concurrent with
             transfer to an ultimate purchaser.

             Marketing of the Skunk2 Racing VTEC Camshaft using any identification other than that
             shown in this Executive Order or marketing of the Skunk2 Racing VTEC Camshaft 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 the use of the
Skunk2 Racing VTEC Camshaft may have on any warranty either expressed or implied
by the vehicle manufacturer.

This Executive Order is granted based on emission test results in the modified
configuration using the Cold—Start CVS—75 Federal Test Procedure and an examination
of the On—Board Diagnostic II (OBD II) system. A 2000 Honda Civic Si with a 1.6 liter
engine (YHNXVO1.6VA2Z, TLEV, PC) was used for the evaluation of the Skunk2 Racing
VTEC Camshaft. Results from emissions testing conducted at Clean Air Vehicle
Technology Center are shown below (in grams per mile):

                       50k       NMOG        CO        NOx        HCHO
                 Emission Level 0.081        1.8618    0.118       0.0023
                 (w. DF applied)    .
                       STD       0.125       3.4        0.4        0.015

                      100k      NMOG         CO        NOx         HCHO
                 Emission Level 0.087        1.662     0.131      — 0.0027
                 (w. DF applied)
                       STD         0.156     4.2        0.6        0.018

The emission test results in the modified configuration were below the applicable
certification standards. Examination of the OBD II system showed the Skunk2 Racing
VTEC Camshaft does not affect OBD II operation. Therefore, based on the test results,
the staff concludes that the Skunk2 Racing VTEC Camshaft meets the criteria for
exempting general criteria parts.

However, the ARB finds that reasonable grounds exist to believe that use of the Skunk2
Racing VTEC Camshaft may adversely affect emissions of motor vehicles when
operating under conditions outside the parameters of the CVS—75 Federal Test
Procedure. 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 Skunk2
Racing VTEC Camshaft 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 of the date the
test results are validated. Further, if such test results or other evidence provides the
ARB with reason to suspect that the Skunk2 Racing VTEC Camshaft will affect the
durability of emission control systems, Group—A Autosports shall be required to submit
durability data to show that the durability of vehicle emission control systems are not, in
fact, affected and/or that the add—on or modified part demonstrates adequate durability.

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.

GROUP—A AUTOSPORTS — SKUNK2 RACING VTEC CAMSHAFT — D—537


    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 GROUP—A
    AUTOSPORTS‘ SKUNK2 RACING VTEC CAMSHAFT.

    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.

     Violation of any of the above conditions shall be grounds for revocation of this order.
     The order may be revoked only after a 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 is made
     after the hearing that grounds for revocation exist.

    Executed at El Monte, California, this I7.] 37       day of February, 2002.




                                    Allendz%ons, Chief
                                    New Vehicle/Engine Programs Branch




    GROUP—A AUTOSPORTS — SKUNK2 RACING VTEC CAMSHAFT — D—537


                        EXHIBIT A


  YEAR      MAKE          MODEL          PART #

1992—1993   ACURA      INTEGRA GSR     305—05—0140
1994—2001   ACURA      INTEGRA GSR     305—05—0140
1997—1998   ACURA     INTEGRA TYPE—R   305—05—0140
2000—2001   ACURA     INTEGRA TYPE—R   305—05—0140

1994—1997   HONDA —     bELsol s       305—05—0140
1999—2000   HONDA        civic si      305—05—0140


                                EXHIBIT A


          YEAR      MAKE          MODEL          PART #

        1992—1993   ACURA      INTEGRA GSR     305—05—0140
        1994—2001   ACURA      INTEGRA GSR _   305—05—0140
        1997—1998   ACURA     INTEGRA TYPE—R   305—05—0140
        2000—2001   ACURA     INTEGRA TYPE—R   305—05—0140

        1994—1997   HONDA _     _DEL sot s     305—05—0140
        1999—2000   HONDA         CIvIC si     305—05—0140
j.ins


                                 EVALUATION SUMMARY

  Manufacturer Name: Group—A Autosports

  Name of Device: Skunk2 Racing VTEC Camshaft

  Background:
         Group—A Autosports of 25710 Industrial Blvd. # 2, Hayward, California 94545,
  has applied for an exemption from the prohibitions in Section 27156 of the California
  Vehicle Code (VC) for the Skunk2 Racing VTEC Camshaft designed for the Acura and
  Honda vehicles listed in Exhibit A.

  Recommendation:
       Grant exemption to Group—A Autosports as requested, and issue Executive Order
~~p—537.
  Device Description:
          Group—A Autosports‘ Skunk2 Racing VTEC Camshafiis specifically designed for
  installation on the Acura and Honda vehicles listed in Exhibit A. The installation of the
  system does not require any major modifications to the stock motor. Group—A
  Autosports recommends an ignition timing setting of 16—17 degrees before top dead
  center which is a smaller range than recommended by the Original Equipment
  Manufacturer, but within the range of stock settings.
          The Skunk2 Racing VTEC Camshaft is intended to increase the vehicle‘s power
  output. The induction flow into and exhaust from the engine is increased because the
  Skunk2 Racing VTEC Camshaft is manufactured with different opening crankshaft
  angles, duration, and fift of intake and exhaust vaives than the stock camshaft. This
  allows better induction of the intake charge into the engine, resulting in a higher power
  output. However, the aggressive intake charge induction can have an adverse effect on
  emissions if the scavenging of the exhaust gases causes excessive portions of the
  intake charge to be drawn from the combustion chamber before combustion. Also,
  potential fuel economy penalties could be experienced.

  Discussion/Basis for the Recommendation:
          The scavenging effect on the intake charge can manifest in substantial emissions
  increases in HC and CO. Group—A Autosports was required to conduct emission testing
  of the Skunk2 Racing VTEC Camshaft to show compliance with the applicable
  certification standards. A 2000 Honda Civic Si with a 1.6 liter engine (YHNXVO1.6VA2)
  was used for the evaluation of the Skunk2 Racing VTEC Camshaft. The test vehicle
  was certified to passenger car Transitional Low—Emission Vehicle standards and was
  equipped with On—Board Diagnostic !I system. Testing consisted of one Cold—Start CVS—
  75 FTP in the modified configuration to set all readiness codes, and measure
  emissions. The ARB did not perform testing to confirm the test results submitted by the
  applicant.
     _—   Results from emissions testing conducted at Clean Air Vehicle Technology
  Center, in Hayward, California, are shown below (in grams per mile):


                                             50k      NMOG         CO        NOx        HCHO
                                       Emission Level 0.081        1.618     0.118       0.0023
                                       (w. DF applied)
                                              STD        0125      3.4        0.4        0.015

                                            100k      NMOG         CO        NOx        HCHO
                                       Emission Level 0.087        1.662     0.131       0.0027
                                       (w. DF applied)
                                              STD        0.156     4. 2       0.6        0.018

                               The emission test results in the modified configuration were below the applicable
                       certification standards. All OBD II system readiness indicators set in the modified
                       configuration, and no diagnostic trouble codes were triggered. Therefore, based on the
                    ~ _test results, the staff concludes that the Skunk2 Racing VTEC Camshaft meets the
                      —criteria for the exemption of general criteria parts. However, the ARB finds that
                       reasonable grounds exist to believe that use of the Skunk2 Racing VTEC Camshaft
                       may adversely affect emissions of motor vehicles when operating under conditions
                       outside the parameters of the previously prescribed test procedure. Accordingly, the
                       ARB reserves the right to conduct additional emission tests in the future, as such tests
                       are developed.                                                     n
                               Based on the CVS—75 FTP and OBD—II test results, the staff concludes that the
                       Group—A Autosports‘ Skunk2 Racing VTEC Camshaft meets the requirements for a VC
                       27156 exemption for the Acura and Honda vehicles listed in Exhibit A.
            Lerm,
scusines.


                          EXHIBIT A


      YEAR      MAKE        MODEL          PART #

    1992—1993   ACURA    INTEGRA GSR     305—05—0140
    1994—2001   ACURA    INTEGRA GSR     305—05—0140
    1997—1998   ACURA   INTEGRA TYPE—R   305—05—0140
    2000—2001   ACURA   INTEGRA TYPE—R   305—05—0140

    1994—1997   HONDA     DEL SOL S      305—05—0140
    1999—2000   HONDA      CIVIC Si      305—05—0140
L



Document Created: 2005-09-01 12:40:21
Document Modified: 2005-09-01 12:40:21

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