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Thread: Over rich condition, please help!

  1. #1
    Tuner in Training
    Join Date
    Nov 2018
    Location
    Mountain Home, AR
    Posts
    12

    Over rich condition, please help!

    Over rich condition, please help!


    I have a LQ9 6.0 with ProCharger, Comp Cams, Headman Headers, Big Mouth intake, MSD wiring, 60lb injectors. I cannot seem to get a handle on the over rich condition. Truck runs great, easy to start, but black smoke and fouled plugs. Will attach latest files for anyone to view.

    Thank you in advance for any assistance...

    Nick in Mountain Home, AR
    Attached Files Attached Files
    Attached Files Attached Files

  2. #2
    Tuning Addict 5FDP's Avatar
    Join Date
    May 2012
    Location
    Rogers, MN
    Posts
    13,565
    Where is your wideband data?

    Why are you commanding 11.98 AFR?

    What fuel are you using?

    Is the injector data correct?
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.