Approval Details

Valid E.O.


This Executive Order approved the specified parts on on May 24, 1999.
As of Sunday, July 14th, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModelsModificationRemarks
11.15001991-99 NSXThe following close coupled catalyst engine families are excluded from this Executive Order: 1996 model-year, THN1.6VJG2EK, THN1.6VJG3EK, THN1.6VJGKGK, THN2.2VJG2EK, THN2.5VJGKEK, 1997 model-year, VHN1.6VJG2EK, VHN1.6VJG3EK, VHN1.6VJGKGK, VHN2.2VJG2EK, VHN2.5VJGKEK, 1998 model-year, WHNXV01.6CA3, WHNXV01.6JL2, WHNXV01.6KA4, WHNXV02.5GA1, and 1999 model-year, XHNXV01.6CA3. The following Ultra-Low Emission Vehicle (ULEV) engine family is excluded from this Executive Order: 1999 model-year, XHNXVO2.3PL4.The Performance Header System is a long tube style header manufactured out of 16 gage stainless steel tubing. The location of the oxygen sensor is at the collector, similar to the stock configuration. On vehicles where the existing oxygen sensor wire loom does not reach the new oxygen sensor location, Comptech will provide a wire loom extension that will plug into the factory connector.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-455-3
  • Executive Order 455-3 / D455-3
  • ARB # D-455-3
  • Executive Order No: D-455-3
  • C.A.R.B. No. D-455-3
  • Resolution D-455-3
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-455-3 PDF

D-455-3 Document:

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