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Thread: LTFT and STFT in scanner

  1. #1
    Advanced Tuner Pro Street's Avatar
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    LTFT and STFT in scanner

    I did about a hour log and came back home to look at it and my LTFT and STFT are not right.On histogram #3 all readings are -100.0 and on #4 they are -48 to -51 all readings.This is first scan with 2.1.16.0
    What do you think is wrong?
    2018 GMC Denali A8 6.2L
    2016 CTS-V
    2016 C7 Z06 A8
    2016 C7 Z06/Z07 A8 vert
    2015 Chevy SS 6.2 LS3 A6
    1996 Impala SS LT1 CAI
    1995 Chevy 1500 5.3 CAI Z06 cam
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  2. #2
    HP Tuners Support
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    Bill@HPTuners's Avatar
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    I've seen a few other threads like this http://www.hptuners.com/forum/showth...fuel+trims+100 for one example...were you standalone logging or using your laptop? Seems most just close the scanner & reopen & all is well.
    It doesn't have to be perfect, it just needs to be done in two weeks...

    A wise man once said "google it"

  3. #3
    Advanced Tuner Pro Street's Avatar
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    I was using my laptop.
    I will take it back out there and give it a try.
    Thanks
    2018 GMC Denali A8 6.2L
    2016 CTS-V
    2016 C7 Z06 A8
    2016 C7 Z06/Z07 A8 vert
    2015 Chevy SS 6.2 LS3 A6
    1996 Impala SS LT1 CAI
    1995 Chevy 1500 5.3 CAI Z06 cam
    1957 Chevy vert

  4. #4
    HP Tuners Support
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    Bill@HPTuners's Avatar
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    keep us updated
    It doesn't have to be perfect, it just needs to be done in two weeks...

    A wise man once said "google it"

  5. #5
    Advanced Tuner Pro Street's Avatar
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    Thumbs up

    Worked great today.
    I wonder what caused that?
    2018 GMC Denali A8 6.2L
    2016 CTS-V
    2016 C7 Z06 A8
    2016 C7 Z06/Z07 A8 vert
    2015 Chevy SS 6.2 LS3 A6
    1996 Impala SS LT1 CAI
    1995 Chevy 1500 5.3 CAI Z06 cam
    1957 Chevy vert

  6. #6
    Супер Модератор EC_Tune's Avatar
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    I've seen that a few times. The HPT Guys said it was something about scanning picking up during the middle of a packet or something like that. It's somewhat unusual but some PCM's seem more prone to it than others.
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