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Thread: best way to fail the MAF and tune VE only??

  1. #1
    Tuner dynoguy's Avatar
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    best way to fail the MAF and tune VE only??

    got a 96 chev truck here with a Vortech SC. converted wiring and ECM to 2002 exoress van....MAF goes nuts anything other than idle..I set the fail Hz to 100...is that all needed to tune via VE table only?????? dynamic airflow-high RPM disable to 6000-hysterisis 100............thanks

  2. #2
    Senior Tuner Russ K's Avatar
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    I set the Maf fail to 0 Hz, and set the P0103 to no light & remove the check mark from the SES enable box. You will need the 2 bar OS as well.

    Russ Kemp

  3. #3
    Tuner dynoguy's Avatar
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    can it be done with a 1 bar and an FMU????customer dont want to spend too much, whats new.......idles fine, above idle acts like going into decel mode??? i have it disabled for now....any thoughts

  4. #4
    Tuner dynoguy's Avatar
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    just adde a log,,thanks

  5. #5
    Advanced Tuner
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    VE Tuning - Speed Density:
    Steady State
    • Lo MAP Delta = 0
    • Hi MAP Delta = 0
    • Lo TPS Delta = 0
    • Hi TPS Delta = 0

  6. #6
    Tuner dynoguy's Avatar
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    tried just now, didnt change a thing.....

  7. #7
    Tuner dynoguy's Avatar
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    found the bypass valve was bad and causing reversion through the MAF..still didnt want to work in "VE only" mode.....