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Fuel Injector ?

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  • Fuel Injector ?

    Will upgradeing the stock fuel injectors on a stock engine with a tune have much power gains to it or not? And what about fuel pressure regulators? Any info would be great.
    96 Camaro Z28, T-tops, 6 Speed, Slp CIA, Flowmaster cat-back, 3:42 gears

  • #2
    In short, no. Stock 24# is good for a stock motor. Anything bigger would be useless. And you'd have to program the PCM for the larger injectors, unless they're marginally larger...because your PCM can compensate up to a certain percentage by reducing pulse widths.

    An adjustable regulator will do no good. Initial gains could be up to 15 hp by lowering the pressure (leaning it out), but your PCM will see that the AFR is not correct according to the stock program, and end up adding fuel. Then, you'll be back to the same AFR as before. The way around this is to have your PCM programmed by PCMforless or madZ28. They can lean out the stock rich programming, and you'll gain the usual 10-15 hp. No need to tinker with the fuel system.
    94 Black T/A GT, Advanced Induction 355, 3200 stall, built 4L60E, Moser 9", Baer Brakes, Shooting for 11s...

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    • #3
      Alright, thanks for the quick reply.
      96 Camaro Z28, T-tops, 6 Speed, Slp CIA, Flowmaster cat-back, 3:42 gears

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