Approval Details

Valid E.O.


This Executive Order approved the specified parts on on December 19, 2000.
As of Monday, September 16th, 2019 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModelsModification
WIK-LR4-4.8LA1999-2001 GM 4.8L truck, 2.1L supercharger w/ 3.995" diameter pulley and a 7.50" diameter crankshaft pulleysame as above

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-231-17
  • Executive Order 231-17 / D231-17
  • ARB # D-231-17
  • Executive Order No: D-231-17
  • C.A.R.B. No. D-231-17
  • Resolution D-231-17
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-231-17 PDF

D-231-17 Document:

                                                                                   (Page 1 of 3)

                                       State of California
                                   AIR RESOURCES BOARD

                                 EXECUTIVE ORDER D—231—17
                          Relating to Exemptions Under Section 27156
                                       of the Vehicle Code

                                  WHIPPLE INDUSTRIES, INC.
                                   ___ WHIPPLECHARGER

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 installation of the WhippleCharger, manufactured
and marketed by Whipple Industries, Inc., 3292 N. Weber Ave. Fresno, California, 93722 has
been found not to reduce the effectiveness of the applicable vehicle pollution control system and,
therefore, is exempt from the prohibitions of Section 27156 of the Vehicle Code for the following
vehicle applications, excluding any vehicle certified to an Ultra Low Emission Vehicle
Standards (ULEV):

General Motors Trucks
                                              Pulley Dia.
Year         Engine   Kit#s            Supercharger/Crankshaft      Compressor Size   _

1999—2001 4.8L    WIK—LR4—4.8LA              3.995"/7.50"              2. AL
1999—2001 4.8L    WIK—LR4—4.8LB              3.647"/6.25"              2.3L
1999—2001 A.8L “' WIK—LR4—4.8LC              4.376"/7.50"            23L
1999—2001 5.3L        WIK—LM7—5.3LA          3.698"/7.50"              21L
1999—2001   ~5.3L     WIK—LM7—5.3LB _        3.375"/6.25"              2.3L.
1999—2001    5.3L     WIK—LM7—5.3LC          4.050"/7.50"              2.3L.
1996—2000    5.7L     WIK—L31—5.7L           2.875"/77.50"             1.6L
1999—2001    6.0L     WIK—LQ4—6.OLA          2.976"/7.50"              2. A1L
1999—2001    6.0L     WIK—LQ4—6.0LB          2.716"/6.25"              2.3L
1999—2001    6.0L     WIK—LQ4—6.0LC          3.259"/7.50"              2. 3L
1996—2000    7 AL     WIK—L29—7 .4LA .       2.750"/7.50"              21L
1996—2000    7.AL     WIK—L29—7.4LB          3.125"/7.50"              2.3L
2001         81L      WIK—L18—8. 1LA         2.291"/6.25"              2.3L
2001         8. A1L   WIK—L18—8.1LB          2.750"/7.50"              2.3L

The WhippleCharger kit for GM trucks includes the following main components: Twin Screw
Whipple supercharger, two auxiliary fuel injectors with a stand alone computer, air bypass valve,
and the use of the stock closed element air cleaner. The maximum boost is 8 psi.

  Whipple Industries, Inc.                 |                        Executive Order D—231—17
  WhippleCharger         _      ,              '                    (Page 2 of 3)        |

  This Executive Order is valid provided that the installation instructions for the supercharger will
  not recommend tuning the vehicle to specifications different from those of the vehicle         ’
  manufacturer. Whipple recommends that only 92 octane fuel be used.

  Changes made to the design or operating conditions of the supercharger, 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 Whipple Industries WhippleCharger advertised,
  offered for sale, sold with, or installed on a motor vehicle prior to or concurrent with transfer to an
  ultlmate purchaser.

  Marketing of the supercharger using any identification otherthan that shownin this Executive
  Order or marketing of the supercharger 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 the supercharger shall not be construed as exemption to sell, offer for sale, or
  advertise any component of the kit as an individual device.

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

  This Executive Order is granted based on emissions test data conducted on a 1999 5.3L. C1500
  truck, certified to the Low Emission Vehicle (LEV) emission standards.

                     NMOG CO         NOX       HCHO
  Standards          0.160 4.4       0.4       0.018
  device w/ dfs      0.105 1.3       0.4       0.002

_ Test results showed thatthe WhippleCharger when installed on the vehicle did not cause tailpipe
  emissions to exceed the vehicle‘s applicable emission standards during a Cold Start CVS—75
  Federal Test Procedure. This Executive Order is also based on an On Board Diagnostic !I (OBD
  II) testing conducted on the same test vehicle. Test data showed that the WhippleCharger when
  installed on the vehicle did not affect the vehicle‘s ability to perform its OBD II monitoring.

  This Executive Order is granted based on submitted emissions test data which show that
  emissions are not affected during the Cold—Start CVS 75 Federal Test Procedure. However, the _
  ARB finds that reasonable grounds exist to believe that use of the Whipple supercharger 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
   supercharger 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.

  Whipple Industries, Inc.                                        Executive Order D—231—17
  WhippleCharger                                                  (Page 3 of 3)

  Further, if such test results or other evidence provides the ARB with reason to suspect that the
  supercharger will affect the durability of the emission control systems, Whipple 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
_ _continuestomeetthe standards and procedures of Title 13, California Code of Regulations,
  Section 2222, et seq.


  No claim of any kind, such as "Approved by the Air Resources Board", may be made wnth 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 has been made after the hearing that grounds
  for revocation exist.

  Executive Order D—231—16, dated February 2000, is superseded and of no further force and

——— Executedg at El—Monts, California, this   /?day of December2808:—— —          ——     cz>        ho —~

                                       . B. Sumimerfield, Chie
                                      Mobile Source Operations Division

Document Created: 2005-09-01 12:40:23
Document Modified: 2005-09-01 12:40:23

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