Approval Details

Valid E.O.


This Executive Order approved the specified parts on on July 19, 1995.
As of Sunday, May 19th, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModelsModification
9363CA1993-1994 GM Lumina/Z34 3.4L MPI AutomaticModification allowed GM: Automotive Digital Systems ADS Superchip is a replacement Prom designed to meet the original equipment manufactures hardware specifications. The wide-open-throttle active device retains the manufacturers' idle and part throttle calibrations while modifying fuel and timing maps which would be active during the full throttle - hard acceleration driving condition. Automotive Digital Systems recommends that only 92 octane fuel be used.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-287-1
  • Executive Order 287-1 / D287-1
  • ARB # D-287-1
  • Executive Order No: D-287-1
  • C.A.R.B. No. D-287-1
  • Resolution D-287-1
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-287-1 PDF

D-287-1 Document:

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