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Thread: rich to lean is it normal in openloop

  1. #1
    Tuner in Training
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    rich to lean is it normal in openloop

    My car starts rich and goes lean as it warms up in open loop. It starts around 10.5 and ends around 15.4 after good heat soak. But when it up to temp at first it runs around 13.5 . If this is normal when do i tune it . Do i tune it when motor up to temp or after it gets heat soaked.

  2. #2
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    Post tune.
    Post a log and tune if you want help

    VCM Suite V3+ GETTING STARTED THREADS / HOW TO's

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    ID1000's, 220/240, .598/.598, 118 from Cam Motion

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  3. #3
    Tuner in Training
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    it a sd tune for turbo lq4
    Attached Files Attached Files

  4. #4
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    Tune it for the condition you'll be in most of the time, which is usually normal driving around. Heatsoak is a temporary condition that only lasts a minute or two, it's ok for it to be a little lean then, I think everyones car does that to some extent.
    2001 Z06 : 856/830 : Built LQ9 403ci : D1SC 17psi : Self-built , self-tuned.

  5. #5
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    Or you could enable.. **GASP**.. FUEL trims, and let them do what they were designed to do and make adjustments for you in cases such as heat soak..
    Last edited by schpenxel; 06-08-2015 at 09:33 AM.
    Post a log and tune if you want help

    VCM Suite V3+ GETTING STARTED THREADS / HOW TO's

    Tuner by night
    CPX Tuning
    2005 Corvette, M6
    ECS 1500 Supercharger
    AlkyControl Meth, Monster LT1-S Twin, NT05R's
    ID1000's, 220/240, .598/.598, 118 from Cam Motion

    2007 Escalade, A6
    Stock