Approval Details

Valid E.O.


This Executive Order approved the specified parts on on July 29, 1999.
As of Thursday, October 17th, 2019 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModels
1535111993 GM Typhoon 4.3L California

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-260-9
  • Executive Order 260-9 / D260-9
  • ARB # D-260-9
  • Executive Order No: D-260-9
  • C.A.R.B. No. D-260-9
  • Resolution D-260-9
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-260-9 PDF

D-260-9 Document:

                                                                               (Page 1 of 2)

                                              State of California
                                          AIR RESOURCES BOARD

                                         EXECUTIVE ORDER D—260—9
                                  Relating to Exemptions Under Section 27156
                                               of the Vehicle Code

                                              HYPERTECH, INC.
                                              Performance Chips

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 Performance Chips, manufactured and
marketed by Hypertech, Inc., 1910 Thomas Road, Memphis, Tennessee 38134—6315 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:

Part No.           Vehicle Application          Engine Disp.                 Model—Year

153511              GM Typhoon trucks (CAL)         4.3.                        1993
153512              GM Typhoon trucks (FED)         4.3.                        1993

This Executive Order is valid provided that the installation instructions for the Performance Chips will not
recommend tuning the vehicle to specifications different from those of the vehicle manufacturer.

The Performance Chips are designed to enhance the vehicle‘s performance at wide open throttle conditions by
increasing fuel delivery and timing.

Changes made to the design or operating conditions of the Performance Chips, 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 Hypertech Performance Chips advertised, offered for sale, or sold
with or installed on, a motor vehicle prior to or concurrent with transfer to an ultimate purchaser.

Marketing of the Performance Chips using any identification other than that shown in this Executive Order or
marketing of the Performance Chips 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 Performance Chips
shall not be construed as exemption to sell, offer for sale, or advertise any component of the kit as an individual

    ©Hypertech, Inc.                                                              Executive Order D—260—9
     Performance Chips                                                                       (Page 2 of 2)

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

    This Executive Order is granted based on prior submitted emissions test data. Test results showed that tailpipe
    emissions with the Performance Chip installed on various vehicles met their applicable emission standard during
    a Cold Start CVS—75 Federal Test Procedure.

    The ARB finds that reasonable grounds exist to believe that use of the Performance Chips 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 Performance Chips 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 Performance Chips will affect the
    durability of the emission control system, Hypertech, 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.

    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 continues to meet the 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 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 after hearing that
    grounds for revocation exist.

    Executed at El Monte, California, this    ‘;q   day of July 1999.

                                          Aus tat: [
                                           B. Summerfield, Chief
                                            pile Source Operations Division

Document Created: 2005-09-01 12:39:45
Document Modified: 2005-09-01 12:39:45

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