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Thread: Tuning the transient parameters

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  1. #11
    Lifetime Member hquick's Avatar
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    Today I experimented again. Whilst driving I slowly upped B9000 (impact factor) by 15% increments.
    Eventually the Burb got to the point where it would hesitate/bog slightly when hitting the accelerator. It was going too rich.
    I did get to a point where I could stab the throttle and there was no sign of lean tip in whatsoever. Infact the commanded AFR is now lagging the tip in...which is ideal (Have a look at the end of the log where I'm stabbing the throttle whilst idling). Only problem now is a full lean condition when I lift off the pedal after accelerating. Is that an issue?
    Howard

    YOU ONLY NEED TWO TOOLS IN LIFE - WD-40 AND DUCT TAPE. IF IT DOESN'T
    MOVE AND SHOULD, USE THE WD-40. IF IT SHOULDN'T MOVE AND DOES, USE THE
    DUCT TAPE.
    IF YOU CAN'T FIX IT WITH A HAMMER, YOU'VE GOT AN ELECTRICAL PROBLEM.


    98 K1500 'HOLDEN' Suburban.
    Custom Whipple SC, Mercruiser Marine intake, 0411 PCM, 4L80E w/shift kit

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