Approval Details

Valid E.O.


This Executive Order approved the specified parts on on April 28, 1998.
As of Wednesday, May 22nd, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModelsModificationRemarks
JP-11972-91 American Motors/Chrysler Jeep vehicles equipped with the 4.2 liter engineThe installation of the kit requires the removal of the following components that are located within the engine compartment: Air cleaner assembly, carburetor/throttle body, fuel pump, electronic control module (ECM), oxygen sensor, air injection system (air tubes plugged), and other related vacuum valves and lines. Ignition timing is set at 6-8 degrees BTDC at 700 RPM idle. No changes are made to the stock carbon canister except for the vacuum line that was connected to the carburetor float bowl vent, it is plugged at the canister. The new heated oxygen sensor is installed in the stock location on vehicles currently equipped with an oxygen sensor. On vehicles which do not have an oxygen sensor, the sensor must be placed 3" downstream of the exhaust manifold flange.The Electronic Fuel Injection Conversion Kit, Model No. JP-1 includes the following main components: Throttle Body Unit, Open Element Air Cleaner, Electronic Control Module, wiring harness, EPROM (CAL8 calibration), Cal-pack, MAP sensor, engine coolant sensor, heated oxygen sensor, electronic fuel pump, fuel filter, fuel pump relay, and vehicle speed sensor.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-452
  • Executive Order 452 / D452
  • ARB # D-452
  • Executive Order No: D-452
  • C.A.R.B. No. D-452
  • Resolution D-452
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-452 PDF

D-452 Document:

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