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smaller fuel injectors means more fuel?

This is a discussion on smaller fuel injectors means more fuel? within the LT1 forums, part of the Vehicle Specific category; I have tuned my Lt1, the programmer guy told me that my system was running a little lean, so, he ...

  1. #1
    Junior Member
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    Trans Am 97

    smaller fuel injectors means more fuel?

    I have tuned my Lt1, the programmer guy told me that my system was running a little lean, so, he let it know to the pcm that i was running a smaller fuel injertor size, this way, the pcm will inject a little more gas.

    is that true?

    I have full SLP exhaust system, CAI, 160 degree stat,iridium spark plug,wires.

    thanks in advance-

  2. #2
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    96 impala

    in short,yes.
    if you tell the pcm the injector is smaller than it really is,it will send a longer pulswidth.

  3. #3
    Senior Member ss~zoso~ss's Avatar
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    thats cool to know

  4. #4
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    yes tricking the pcm into raising the pulse width will work but fuel injectors are not rated for a %100 duty cycle I belive its more like %30 in a nut shell yes a fuel injector can supply more fuel than rated for with higher fuel press and a longer pulse width butthis will reduce the life of your injectors by how much depends on how far you push it

  5. #5
    Member Chad97z's Avatar
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    your car will also get more air than what the PCM thinks, if you port the MAF.

  6. #6
    Pathelogical Liar BlackLT1Z28's Avatar
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    I don't know if I would ever mess with the MAF, those things are good to support close to 500hp anyways. And if you screw up, you'll have to get another one anyways.

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