Howell EFI Conversion & Wiring Harness Ex…. Howell Engine Developments, Inc. was formed in 1988 by Bill and Matt Howell to support the growing trend towards the use of electronic fuel injection in the Hot Rod/Street Rod and Four Wheel Drive Industries. At Howell.
Description: The Howell Fuel Injection Conversion TBI Kit is an essential upgrade for your Jeep. Two-barrel carburetors have been a disaster to keep running correctly. These computer controlled fuel injection systems.
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