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Thread: Crazy injector activity

  1. #1

    Crazy injector activity

    I have not seen this. The injectors are going to max during startup. I don't see why...

    COLD START LOG 4 (1).hplLSA E85 SD Tune 08.hpt

    Any thoughts?
    The car did not do this when it was on the rollers. Only when the customer brought it home.

  2. #2
    Senior Tuner
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    I think that is just a scanner issue. Maybe not making good connection at DLC
    Tuner at PCMofnc.com
    Email tuning!!!, Mail order, Dyno tuning, Performance Parts, Electric Fan Kits, 4l80e swap harnesses, 6l80 -> 4l80e conversion harnesses, Installs

  3. #3
    Customer states that his oil already smells like fuel. It's definitely pumping it into the engine. The question is why...

  4. #4
    Bump to see if anyone has an ideas...

  5. #5
    Senior Tuner kingtal0n's Avatar
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    Feb 2017
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    I don't tune any Gen4 ecu but I like looking at the files and learning in my spare time, here is some stuff I noticed,

    Maybe negative values in the short pulse adder?
    Maybe the EQ Ratio in open loop being 10.0?
    Flex fuel is enabled but the gas and alcohol EQ ratio maps are identical? Seems strange

    I would look at a stock map and compare the files looking for any obvious huge discrepancy. Like a corrupted map somewhere or a negative value, I've noticed sometimes negative values make the injectors go wide open.