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Thread: Injector scaling on E38 ecm

  1. #1
    Potential Tuner
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    May 2024
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    Injector scaling on E38 ecm

    First off I'm new to using HP tuner and I just swapped over my truck to a Kenne Bell with 60# injectors and an LS2 throttle body. The truck has a btr truck norris cam and 3200 stall convertor. It was tuned with the cam and convertor prior to adding the supercharger, injectors, and throttle body. Will I need to scale the injectors down since the ECM max is 63.5? Will take any help since this is all new. I have tried classes and videos and can't seem to find an answer. Thanks in advance and let me know if any more info is needed.

  2. #2
    Advanced Tuner JayRolla's Avatar
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    Mar 2021
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    Quote Originally Posted by DinosaurTuner View Post
    First off I'm new to using HP tuner and I just swapped over my truck to a Kenne Bell with 60# injectors and an LS2 throttle body. The truck has a btr truck norris cam and 3200 stall convertor. It was tuned with the cam and convertor prior to adding the supercharger, injectors, and throttle body. Will I need to scale the injectors down since the ECM max is 63.5? Will take any help since this is all new. I have tried classes and videos and can't seem to find an answer. Thanks in advance and let me know if any more info is needed.
    I think the newer e38 dont need scaled but if yours maxes at 63.5 then yes. Double stoich, half the flow rate and IVT tables.
    2013 CTS-V Coupe M6 - 1 7/8" Headers, 3" x-pipe, stock mufflers, Airaid intake w/green filter, ID1050X injectors, DSXtuning flex fuel kit, DMS under hood tank, upgraded pump, 3/4" lines, griptec 2.4" pulley, solid isolator, 100mm idler, reinforced brick, MM mild catch can, AEM 30-0334 wbo2, 600whp/630wtq

  3. #3
    Senior Tuner TheMechanic's Avatar
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    2007 63lb limit 12603892/12597121
    2008-09 63 lb limit 12612384
    2009-10 127 lb limit 12625455
    2010-up 127 lb limit 12633238