Fuel injector question

freakypierced1 · Oct 7, 2009

I recently bought a BBK supercharger that i'm installing now. A friend suggested I get bigger fuel injectors. I have a 93 ranger 4.0 which has 19lb injectors (i think). What would be good injectors to get and how many lbs? I have a hypertech power chip, bbk 66mm tb, bigger MAF, and now a supercharger.

Davis · Oct 7, 2009

well you can't just throw in bigger injectors and expect it to work. the ecu will just keep commanding the same pulsewidth and you'll run rich. for example, if you put 30lb injectors in and you originally had 19 lb injectors it'll be 57% too rich. [(30/19)-1] x 100% You need to tell the ECU (probably via a re-flashed chip) that the injectors are 30lb injectors.

that being said, if you think you'll boost power 60%, 30 lb hr injectors would do fine.

Fuel injector question

freakypierced1

15+ Year Member

Davis

15+ Year Member

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