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Thread: LS3 fueling above 2k rpm

  1. #1
    Tuner in Training
    Join Date
    Sep 2012
    Posts
    37

    LS3 fueling above 2k rpm

    My tune's fueling goes berserk >= 2k rpm, and I can't figure out why. Based on the discrepancy between the long term fuel trims, I suspect I have a bad o2 sensor. I don't think that's the cause of the erratic fuel adjustments at and above 2k rpm.

    Here's a scan and current tune. Can someone take a look please?
    Attached Files Attached Files

  2. #2
    Tuning Addict 5FDP's Avatar
    Join Date
    May 2012
    Location
    Rogers, MN
    Posts
    13,565
    How did the VE get numbers over 200 on a stock 1 bar map sensor?

    That looks like a big problem if you ask me.
    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.