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Thread: fg turbo boost error

  1. #1

    fg turbo boost error

    Fg xr6t manual, stock turbo and flapper/actuator, full 4" exhaust, cooler etc, closed loop boost control.

    Its getting an occasional boost cut closing throttle on the street in higher gears with a boost error of less than -1psi before cut, tried both overboost threshold and overboost threshold B doubled to -4psi, same. I had thought it would need to be a boost error greater than 4psi over desired to cut with -4psi overboost threshold.

    Is there another multiplier im missing?

    There are overboost threshold and overboost threshold B, whats the difference between the two?


    Thanks
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  2. #2
    Senior Tuner SultanHassanMasTuning's Avatar
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    i would look the source

    torque
    fuel
    spark
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  3. #3
    Potential Tuner
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    May 2017
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    did you work it out having same issue...

  4. #4
    Advanced Tuner
    Join Date
    Feb 2015
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    over boost thresholds will set an over boost condition when error is LESS than in the box.

    set it to 0 and max the P1227 threshold and timer