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  1. #1
    Established Member Two Rings
    Join Date
    Nov 23 2021
    AZ Member #
    644508
    Location
    Utah

    Logging questions

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    Hello!
    Vehicle: 2015 Q5 2.0 CPMB 129044mi

    Im currently hunting down the cause of my misfires,
    When going WOT, it seems when I get into boost, a studder//shutter happens, accompanied with misfires, and a cel, that may or may not stay.
    This normally happens when getting into boost, such as WOT up to approx 2500-3250rpm.
    as well as ive had it happen in D, cruise control. While it maintained speed

    Ive been watching my injectors(checking the high pressure actual, watching it rise when the vehicle has been driven and turned off), and have new ones to install,

    Ive just replaced my spark plugs w/ BKR7E
    HPFP replaced by dealer

    The question is, what should I log Via VCDS to try to represent my misfire issue?
    Im going to take it out right now, as so to get the code, and be able to show yall that.
    [wrench]

  2. #2
    Veteran Member Four Rings Perry01's Avatar
    Join Date
    Jan 22 2016
    AZ Member #
    367620
    My Garage
    Touareg V8 FSI 8V A3 - B8.5 Q5 - MKVI GTI
    Location
    Hawaii and Utah

    I see you have 130k miles. Before you start loading up the parts cannon, have you done a carbon cleaning? That could be the cause of your misfires. Are the misfires on all cylinders? You can log total misfires or select cylinders you want to isolate. Did your gap your new spark plugs?

    I’m also in Utah. Where do you live?
    CPMA / CTS K04-0064 / IE custom tune / Wagner FMIC / Custom ZF8 TCU tune

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