Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on June 12, 2002.
As of Sunday, October 20th, 2019 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModels
305-05-02001994-2001 Honda Prelude VTEC

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-537-1
  • Executive Order 537-1 / D537-1
  • ARB # D-537-1
  • Executive Order No: D-537-1
  • C.A.R.B. No. D-537-1
  • Resolution D-537-1
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-537-1 PDF

D-537-1 Document:



                                               State of California
                                           AIR RESOURCES BOARD

                                          EXECUTIVE ORDER D—537—1

                                  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—02—003;

           IT IS ORDERED AND RESOLVED: That the installation of the Skunk2 Racing VTEC
           Camshaft, produced and marketed by Group—A Autosports, 25710 Industrial Blvd. # 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 1994 to 2001 Honda Prelude
           VTEC vehicles (p/n 305—05—0200).

           The Skunk2 Racing VTEC Camshaft is manufactured with different opening crankshaft
           angles, duration, and lift of intake and exhaust vaives from those of the stock camshaft.
           The manufacturer, Group—A Autosports, recommends an ignition timing setting of 16— 17
           degrees before top dead center

          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, except the ignition timing settmg 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
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           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 issued based on an engineering evaluation of previously
   submitted emission test results on a 2000 Honda Civic Si with the Skunk2 Racing VTEC
   Camshaft installed (Executive Order D—537). Test results showed no adverse impact on
   emissions or on the vehicle‘s ability to perform On—Board Diagnostic II (OBD II) system
   monitoring. The 2000 Honda Civic Si is certified to more stringent emission standards
   than the 1994 to 2001 Honda Prelude VTEC vehicles and the camshafts for both
   models are similar in design and construction. Therefore, as with the 2000 Honda Civic
   Si, no adverse impact on emissions is expected from the installation of the Skunk2
«_ Racing VTEC Camshaft on the 1994 to 2001 Honda Prelude VTEC vehicles. —

   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.

   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
   GROUP—A AUTOSPORTS — SKUNK2 RACING VTEC CAMSHAFT — D—537—1


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   _/ Z id    day of June, 2002.




                                Allen%yons, Chief
                                Mobile Source Operations Division




GROUP—A AUTOSPORTS — SKUNK2 RACING VTEC CAMSHAFT — D—537—1


                                  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 1994 to
   2001 Honda Prelude VTEC vehicles (p/n 305—05—0200).

   Recommendation:                                                         .
         Grant exemption to Group—A Autosports as requested, and issue Executive Order
. 0—537—1.

   Device Description:
           Group—A Autosports‘ Skunk2 Racing VTEC Camshaft is specifically designed for
   installation on the 1994 to 2001 Honda Prelude VTEC vehicles. The instailation of the
   camshaft 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 are increased because the
   Skunk2 Racing VTEC Camshaft is manufactured with different opening crankshaft
   angles, duration, and lift of intake and exhaust valves 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:
           Group—A Autosports previously obtained a VC 27156 exemption for the Skunk2
   Racing VTEC Camshaft for selected 1992 to 2001 model year Honda and Acura
   vehicles under Executive Order No. D—537. This exemption was issued based on test
   results generated from a 2000 Honda Civic with the Skunk2 Racing VTEC Camshaft
   installed which showed no adverse impact on emissions or on the vehicle‘s ability to
   perform on—board diagnostic !I (OBD I!) system monitoring. The 2000 Honda Civic is
   certified to more stringent emission standards than the 1994 to 2001 Honda Prelude
   VTEC vehicles, and the camshaft design and construction are similar for both models.
   Therefore, no emission testing or examination of the OBD II system was required for the
   1994 to 2001 Honda Prelude VTEC vehicles since these vehicles are expected to have
   the same effect on emissions and OBD II system monitoring as the 2000 Honda Civic
   Si.
           The staff concludes that Group—A Autosports‘ Skunk2 Racing VTEC Camshaft
   meets the requirements for a VC 27156 exemption for the 1994 to 2001 Honda Prelude
   VTEC vehicles (p/n 305—05—0200).



Document Created: 2005-09-01 12:44:40
Document Modified: 2005-09-01 12:44:40

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