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Thread: 2bar SD tune with maf failed out wont run unless maf is plugged in. help!

  1. #1
    Tuner in Training
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    Jan 2012
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    2bar SD tune with maf failed out wont run unless maf is plugged in. help!

    Hi,

    I have a 2bar SD OS, MAF fail high set to 0. engine runs fine with the MAF plugged in. we plan on completely removing the maf, so we've wired in a separate IAT which reads fine in the vcm scanner regarding IAT values. so, with the maf removed and the IAT rerouted the engine will start but immediately dies. if we route the maf back in and wire it up (aside from the iat) the engine is back to running fine. so, there is obviously something in the tune that I'm missing that is still relying on the MAF. I'll post up the config as well as "with maf" and "without maf" logs for your review. any help would be great, thanks!

    without_maf_dies.hplwith_maf_runs.hplpit_viper_new_motor_3_28_2014_no_changes.hpt

  2. #2
    Advanced Tuner c.u's Avatar
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    Set the DTC's like this.
    Attached Images Attached Images

  3. #3
    Tuner in Training
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    Quote Originally Posted by c.u View Post
    Set the DTC's like this.
    I believe I tried that and wound up with the same behavior but I'll double check. thanks.

  4. #4
    Advanced Tuner c.u's Avatar
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    Set the DTC's up like that,Then i would start over with a stock ve table. Work it from there

  5. #5
    Tuner in Training
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    will do.