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Thread: showing consistant 4 deg knock on WOT

  1. #1
    Tuner in Training
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    showing consistant 4 deg knock on WOT

    Procharged ls1 w f1d on e85. Car has been pulling 4 deg on every wot pull at any rpm. Looking for advise on where to start looking. The 98 sensors I understand are ultra sensitive.
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    Last edited by fotoboy; 04-18-2017 at 02:50 AM.

  2. #2
    Tuner in Training
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    no response?

  3. #3
    Tuning Addict 5FDP's Avatar
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    Tune?
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  4. #4
    Senior Tuner Ben Charles's Avatar
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    Didn't look at the tune... but have you tried lowering spark?? If it still does it after lowering several degrees look for exhaust contacting the body giving a false sense of knock.. Seen this many times over the years

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  5. #5
    Tuner in Training
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    ITs at 16 deg total. It has been for years at this same power on e85.