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ed_ma61
Forums Junkie

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Lost in the K hole
Registered:
May 2002

Re: Fuel Injector Holy Grail	Fri, 24 May 2002 11:07

fuel injectors are not the most sophistocated things... essentialy a fancy solenoid... as far as the ecu is concerned, its just thinking it has to switch on and off current to different solenoids at different times, for different durations. what the injector does with that current is totally up to it. if you put in a non stock injector, it will simply do what it wants to do with the current supplied by the ecu, and providing the ecu doesnt fry (cause you did something dumb like whack in really low impedance injectors) itll just tick away like nothings changed. its then up to 'you' to make the car run in tune by modifying fuel pressure, afm calibration etc so that stoichiomentric a/f mixes are attained. first make sure the impedance isnt going to draw too much current from the ecu to go through its cycle. second, look at the fuel pressure at which the injector is supposed to operate (gives the best spray) and what volume it flows at that pressure. look at your stock pressure and injector flow volume, and then how well you can modify fuel pressure to match the new injector, and provide the right fuel quantity per duty cycle. if you can find an injector that wont fry your ecu by pulling too much juice to operate, and you can fiddle things to make it squirt the right amount of fuel, whats the problem?? the rest is practical stuff like loom plugs and fuel rail location etc etc... cheers ed [Report message to a moderator]

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