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Thread: Idle Surge on Decel

  1. #1
    Advanced Tuner
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    Idle Surge on Decel

    I have been chasing this for a while. It is whipping my arse. It's my personal car. I have decent size cam 236/242 617/613 111+2.

    Running OLMAF.

    It will surge on decel, clutch in, while the car is rolling but stops and idle perfect when car stops rolling.



    You can see it in this clip of the log.

  2. #2
    Tuner jimbos'ss's Avatar
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    rolling idle airflow adder table
    2001 Z06
    JCR fabbed Twin Turbo

  3. #3
    ^this

  4. #4
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    Awesome. Okay that helped alot. Went with .200 across the board that that was a bit much. Then .100 and that seems just a smidge too low. Gonna try .115.

    Do the Integral High/Low have any impact? They are zero'd out.

  5. #5
    Tuner jimbos'ss's Avatar
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    I usually just add a little at a time till I get it right as I don't know any mathematical methods for setting this. as far as the integral high and low I don't know the effects of those two tables, I haven't messed with them at all.
    2001 Z06
    JCR fabbed Twin Turbo

  6. #6
    Senior Tuner Higgs Boson's Avatar
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    idle airflow

    also make sure your timing maps are matching and also smooth.

  7. #7
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    Should the Airflow TPS Max be left at 0.00 or raised to like 8% where the TPS sits at idle?

  8. #8
    Senior Tuner Higgs Boson's Avatar
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    leave all that stock. only change the scalar if you have changed the tb size.

    then make sure your idle timing is right, make sure the tables match in the right places.

    then run the Russk config.

    leave your int and prop tables stock. leave the over under tables stock.

  9. #9
    Tuner jimbos'ss's Avatar
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    Quote Originally Posted by SargeZ06 View Post
    Should the Airflow TPS Max be left at 0.00 or raised to like 8% where the TPS sits at idle?
    mine is set to the stock setting of 1.41% to default to the throttle cracker table. But if your TPS reads higher at idle and rolling then it might need adjustment. I noticed on your screen shot the TPS is 7% while rolling so 8% might work well.
    2001 Z06
    JCR fabbed Twin Turbo