Approval Details

Valid E.O.


This Executive Order approved the specified parts on on August 6, 2008.
As of Monday, July 22nd, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

2001 to 2008 model year Harley Davidson motorcycle applications originally equipped with a fuel injected engine and a 36 pin connector used on the stock Delphi electronic control module.The Twin Tuner EX is an electronic control module (ECM) that works with the stock motorcycleÔÇÖs ECM and is designed to increase fuel into the combustion chamber during high load conditions.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-641
  • Executive Order 641 / D641
  • ARB # D-641
  • Executive Order No: D-641
  • C.A.R.B. No. D-641
  • Resolution D-641
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-641 PDF

D-641 Document:

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