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HOWELL FUEL INJECTION KIT FOR 1987-1991 4.2L JEEP YJ
SKU HOW 396
Howell Fuel Injection Kit for 1987-1991 4.2L Jeep YJ 2 versions OFFROAD and EMISSIONS LEGAL
Converts L-6 Jeep engine to EFI by adapting 4.3L GM V-6 components and in-line electric fuel pump. TBI adapts directly to Jeep barrel carb inlet manifold. Most old emmission plumbingSeliminated. Improves drivability and fuel economy. For emission legal version of kit order part CAYJ258. GM ECM replaces Jeep ECM under dash. High pressure fuel pump must be installed in main fuel line from tank, and bypass fuel returned to the tank. Harness includes diagnostic connector, and diagnostic's similar to 1986-92 GM pickup truck.
Includes all components plus remanufactured 4.3L Chevrolet throttle body to convert 4.2L CJ or Wrangler Jeep to EFI. Specify type and year of Jeep when ordering kit. 50 state emission legal per CARB EO#D452. Many original emission controls are eliminated, which simplifies underhood area. ECM installs under dash. High pressure fuel pump must be installed in main fuel line from tank, and bypass fuel returned to the tank. Harness includes diagnostic connector, and diagnostic's similar to 1986-92 GM pickup truck.
Sam's Offroad has sold and installed hundreds of these kit's without any problems. After installation, most of your old emission plumbing is eliminated and you'll gain better fuel Economy & Performance.
*Please Note: Howell Electronic Fuel Injection Kit's are custom made for each individual vehicle. Sam's Offroad cannot allow returns on this product so be sure you have the skills to be able to install this before ordering. Please call us with any questions. Our staff is trained help you on your installation and service needs.
Your stock air cleaner will not work with the EFI Conversion Kit so we offer 7" K&N Filter, the right size for hood clearance.
When ordering please consider the following information so we can get you exactly what you need:
Are you running Headers?
Are you running stock Cam?
Are you running stock Pistons?
Are you running 2 or 4 barrel Carburetor?
Are you running the stock Intake Manifold?
Are you running any aftermarket Ignition System? SD? Mallory?
What is the estimated altitude you'll be primarily driving at?
After you place the order, you will receive a phone call to discuss the details of your new Fuel Injection System.
Crank Case Ventilation Ring: You will not be able to use your stock air cleaner with the Howell EFI Conversion kit. When removing your old air cleaner on most CJs and YJs you'll notice a hose that hooks into it and then hooks into the back of the valve cover. You will need to retain it so this ring will let you hook up the hose. If it's between the air cleaner and throttle body, We offer the
Valve Cover Recirculation Spacer that fits under the air cleaner and will allow you to reconnect your hose.