Approval Details

Valid E.O.


This Executive Order approved the specified parts on on September 26, 1996.
As of Thursday, July 25th, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModelsModification
WIK4100, 4100-11993-1995 GM S-10 4.3LKit includes Twin screw supercharger, auxiliary fuel pump, closed element air cleaner, and new PROM chip on those with removable PROMS. The original heated air intake system is removed. Heated coolant water flows though the throttle body adapter.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-231-9
  • Executive Order 231-9 / D231-9
  • ARB # D-231-9
  • Executive Order No: D-231-9
  • C.A.R.B. No. D-231-9
  • Resolution D-231-9
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-231-9 PDF

D-231-9 Document:

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