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Thread: Tip in/out accelerator pump shot

  1. #1
    Junior Member
    Join Date
    Aug 2006
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    33

    Default Tip in/out accelerator pump shot

    Can someone point me to the right PIDs/parameters for this ?

    I'm not by my tuning laptop right now ... but I think there was a "decelerate enrichment" parameter, is there a corresponding "accelerate enrichment" ?

    I've leaned out the OL commanded AFR for this car and it is starting to "POP" through the intake only when pushing on the accelerator real fast. If you ease into the throttle it seems okay.

    The car is not actually lean (12.5:1 - 13.0:1 AFR recorded on the WBO2), just when first stabbing the throttle does it momentarily go lean and produce a "POP".

  2. #2
    Lifetime Member hquick's Avatar
    Join Date
    Jan 2007
    Posts
    1,371

    Default

    Hmmmm....mine does the same without the POP!
    I'm wondering the same thing?
    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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