Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on September 23, 2008.
As of Friday, October 18th, 2019 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModelsRemarks
309-370 & 309-3732001 to 2006 model year Harley Davidson motorcycles, which are not equipped with oxygen sensorThe Thunder Max includes the following main components: Replacement ECU, two Bosch heated oxygen sensors, and a sensor control module. Each oxygen sensor is installed in the head pipe 4 to 6 inches from the cylinder head, similar in location and orientation as the late-model Harley Davidson motorcycles equipped with oxygen sensors. User adjustments on ECU can only be made on non-emission related parameters, and on air/fuel ratio and spark settings at high throttle conditions only. The Thunder Max is designed to replace the stock open loop fuel controller with a feedback controlled fueling system using the stock fuel injectors

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-644
  • Executive Order 644 / D644
  • ARB # D-644
  • Executive Order No: D-644
  • C.A.R.B. No. D-644
  • Resolution D-644
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-644 PDF

D-644 Document:



                                     State of California
                                 AIR RESOURCES BOARD

                                 EXECUTIVE ORDER D—644

                        Relating to Exemptions Under Section 27156
                                  . of the California Vehicle Code

                          Thunder Heart Performance Corporation
                                      Thunder Max

 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;

 [T IS ORDERED AND RESOLVED: That the installation of the Thunder Max,
 manufactured and marketed by Thunder Heart Performance Corporation,
 P.O. Box 76, 120 Industrial Drive, White House, Tennessee 37188, 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
 following fuel injected Harley Davidson motorcycles with 88 or 96 cubic inch engine that
 is not originally equipped with an oxygen sensor:

 P/N 309—370 — 2001 to 2005 model year
 P/N 309—373 — 2006 model year, excluding Dyna models with engine family
               6HDXC1.55AES.

 The Thunder Max includes the following main components: Replacement ECU, two
 Bosch heated oxygen sensors, and a sensor control module. Each oxygen sensor is
 installed in the head pipe 4 to 6 inches from the cylinder head, similar in location and
 orientation as the late—model Harley Davidson motorcycles equipped with oxygen
 sensors. User adjustments on ECU can only be made on non—emission related
 parameters, and on air/fuel ratio and spark settings at high throttle conditions only. The
 Thunder Max is designed to replace the stock open loop fuel controller with a feedback
 controlled fueling system using the stock fuel injectors _

  This Executive Order is valid provided that the installation instructions for the Thunder
_ Max will not recommend tuning the vehicle to specifications different from those
  submitted by the device manufacturer.

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

 Marketing of the Thunder Max using any identification other than that shown in this
 Executive Order or marketing of the Thunder Max 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
Thunder Max may have on any warranty either expressed or implied by the vehicle
manufacturer.

This Executive Order is granted based on submitted exhaust emissions test data
generated on a 2008 model year 96 cubic inch Harley Davidson Softail motorcycle,
modified with the Thunder Max. Test results showed that exhaust emission levels met
the applicable emission standards when tested using the Cold—Start CVS—75 Federal
Test Procedure (FTP). Results from emission testing conducted at Ecologic Engine
Testing Laboratories located in Fullerton, California, are shown below, with deterioration
factors (df) applied.

                       _CVS—75 (gm/km)
                         HC+NOx CO
Standards                  0.6       12
Device Test w/ dfs         0.4       6

Similar effect on motorcycle emissions is expected with the installation of the Thunder
Maxon the motorcycles listed in this Executive Order.

The Air Resources Board 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 THE THUNDER
MAX.

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    2&        day of September 2008.




                                 Annette Herbert, Chief
                                 Mobile Source Operations Division


      Thunder Heart Performance Corporation — Thunder Max — D—644



Document Created: 2008-10-31 13:54:12
Document Modified: 2008-10-31 13:54:12

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