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Thread: fuel trims

  1. #1

    fuel trims

    wondering if anyone has run into an issue where stft is mostly negative or close to normal but ltft is always high sometimes staying at 25. i think i attached a log first time really trying this

    lm7
    btr stage 3 truck cam
    deatchwerks injectors 44lb
    long tubes
    ported 706 heads
    Attached Files Attached Files
    Last edited by [email protected]; 04-03-2022 at 04:31 PM.

  2. #2
    Advanced Tuner
    Join Date
    Sep 2021
    Posts
    475
    I would disable both and dial in with a wideband if you haven't already.

  3. #3
    Tuning Addict 5FDP's Avatar
    Join Date
    May 2012
    Location
    Rogers, MN
    Posts
    13,565
    Is the exhaust complete or open headers?
    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.