Approval Details

Valid E.O.


This Executive Order approved the specified parts on on November 19, 1986.
As of Tuesday, April 23rd, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModelsModification
454 TCI-HD1987 and older Chevrolet/GMC 454 CID gasoline engineThe carburetor bowl vent hose is disconnected from carbon cannister and port on the carbon canister plugged, air cleaner and heated air intake replaced with the Airsensor air cleaner, vacuum hose routing changed, automatic choke and carburetor is removed, and exhaust system may be changed to 3 inch diameter. Carburetor replaced with air sensors fuel injection system.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-99-1
  • Executive Order 99-1 / D99-1
  • ARB # D-99-1
  • Executive Order No: D-99-1
  • C.A.R.B. No. D-99-1
  • Resolution D-99-1
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-99-1 PDF

D-99-1 Document:

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