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Thread: C7Z high RPM pulling power????

  1. #1
    Tuner in Training
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    Nov 2014
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    C7Z high RPM pulling power????

    I'm having an issue with a C7Z. Pulls are relatively clean, however in higher RPM's, it's pulling power - closing ETC and changing target fuel EQ. Below is a log and the tune file. Can anyone help me decipher why around 6300 RPM it changes what I have set in the tune?
    Attached Files Attached Files

  2. #2
    Tuning Addict 5FDP's Avatar
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    The commanded AFR is changing to your COT setting of 1.23 in the max enrichment table. Not sure if that closes the throttle too.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

  3. #3
    Senior Tuner Ben Charles's Avatar
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    You same guy posting on corvette forum?

    Email Tunes, PM me for more info
    96 TA Blown/Stroked, 4L80E/Fab 9
    15 C7 A8 H/C 2.3 Blower/PI
    14 Gen 5 Viper
    Custom Mid Engine chassis, AKA GalBen C

  4. #4
    Tuner in Training
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    @5FDP - I will check that out. Car has no cats. I clearly missed disabling that.

    @Ben Charles - No
    Last edited by kjlindgr; 04-05-2020 at 09:42 AM.

  5. #5
    Tuner in Training
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    It was the COT setting. Thanks 5FDP!!