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    Lifetime Member hquick's Avatar
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    Default 0411, marine intake and 4L80E

    Ok guys,
    I just got my Burb going again tonight after 4 months of working on it.
    I installed the Mercruiser Marine intake (42lb Bosch greentops), 4L80E transmission (with Transgo shift kit), Elec fans and had to install a new diff (Detroit Trutrac). I already have the 0411 PCM and am running COS3.
    I took a small, easy drive and mostly it seemed fine.
    after around a 15min drive I stopped for around 20mins.
    When I started up again, the AFR guage was showing very lean (16+) at idle and the truck was stumbling a little.
    Whilst driving it goes very rich...off scale and again stumbles.
    Seems to happen basically as I accelerate....gently, from low speeds.
    Can someone please have a look at my tune and these logs and tell me if you can see anything in particular?
    I haven't done any tuning for months and am afraid I'm back where I started...ie learning from scratch

    Thanks
    Attached Files Attached Files
    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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