Approval Details

Valid E.O.


This Executive Order approved the specified parts on on September 6, 2005.
As of Monday, April 15th, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

2004 through 2006 model year Subaru Impreza STi with a manual transmissionThe ESX2005 kit consists of the following main components: High flow fuel pump, intercooler, open element air filter with intake tubing, exhaust system downstream of the catalytic converter, reprogrammed ECU, and a turbocharger restrictor to delay the opening of the turbocharger waste gate. Maximum boost is raised from 17 to 19 pounds per square inch.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-588-1
  • Executive Order 588-1 / D588-1
  • ARB # D-588-1
  • Executive Order No: D-588-1
  • C.A.R.B. No. D-588-1
  • Resolution D-588-1
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-588-1 PDF

D-588-1 Document:

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