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Thread: cant find MAf Freq fail in this tune

  1. #1
    Tuner in Training
    Join Date
    Aug 2018
    Posts
    43

    cant find MAf Freq fail in this tune

    First I am new to HP Tuners
    we have an LS swap with a 2002 Tahoe engine, 2000 Camaro intake, with a 4L60e.in a Jaguar XJS 1988
    car starts and runs and idles and shifts
    we are on the dyno
    I created an AFR error graph and it works,
    however, when I paste the changes to the primary VE table, the changes have no effect.
    I can not fail the MAF because there is no frequency failure PID.
    if I unplug the MAF, the changes still do not affect the AFR. 5 wire MAF
    this is because, when the MAF is unplugged, it reverts to the secondary VE table.
    I can make the changes there and tune the car fine,
    I created another clone of the AFR error graph for the secondary table with the new rows.
    so, I am confused, it is something simple. but for the life of me, I can not figure out the correct setup to start this process.
    in other words, I have not set up the tune for tuning correctly to date.
    attached is the log of me trying to gather some cells and the tune where I made some changes to the primary and secondary as well as changes to cause the long and short-term trims to disable as well as trying to fail the MAF
    attached is also the tune before I did this
    there is no airflow tab under engine diagnosis?
    Attached Files Attached Files

  2. #2
    Tuning Addict 5FDP's Avatar
    Join Date
    May 2012
    Location
    Rogers, MN
    Posts
    14,067
    Make sure you are in advanced view under the edit tab.

    The MAF fail high freq is in the engine diag tab, set it to 0hz and the the 3 MAF dtc's to MIL on first error.

    No matter what on this OS, when the MAF is failed it is only going to function on the secondary VE table. You'd have to installed the speed density enhanced OS to remove the secondary VE table forever. You will have to make your changes to that table and copy each row over into the primary table, then interpolate and smooth it by hand.
    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
    Join Date
    Aug 2018
    Posts
    43
    copy that
    now I see it
    Thanks,
    I will leave it with MAF-enhanced & RTT enabled
    and see what happens
    Thanks, Troy