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Thread: Only 70-80% throttle

  1. #1
    Tuner in Training
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    Jun 2017
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    Only 70-80% throttle

    Not 100% throttle?

    Curious as to why a log shows it commands 100% throttle, but then it shows 80% ish actual throttle. Truck is a 2017 Silverado 5.3

    Is this normal or should I be changing something? The truck is basically stock, except some changes to the transmission. Attached a couple logs and the current file if anyone wants to look.

    PIR10-7-pass3-14.45.hpl
    leanout.hpl
    JasonZ71-101617-enginetuning-rev5.hpt

  2. #2
    Tuning Addict 5FDP's Avatar
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    May 2012
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    Rogers, MN
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    The throttle position SAE channel will only read to 84%, that is normal.

    The one log shows the non SAE channel and it will go higher.
    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.

  3. #3
    Tuner in Training
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    Jun 2017
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    Quote Originally Posted by 5FDP View Post
    The throttle position SAE channel will only read to 84%, that is normal.

    The one log shows the non SAE channel and it will go higher.
    Got it, just thought it was strange that it read 99%+ in other logs...