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Thread: Strange commanded AFR

  1. #1
    Tuner in Training
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    Strange commanded AFR

    This is on an ls2 vette, it will randomly command 16.0 afr while cruising and I don't know if i'm looking over something in the tune but I can't see a reason why. Maybe someone can give it a look and i'll see if I can get a log.
    Mods are: ls7 cam, manifolds and ls3 heads/intake. I'll post the stock file and the most current.
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  2. #2
    Senior Tuner SultanHassanMasTuning's Avatar
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    i log would help
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  3. #3
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    Quote Originally Posted by SultanHassanMasTuning View Post
    i log would help
    fast forward to the 8 minute mark.
    Attached Files Attached Files

  4. #4
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    Didn't look at tune but would look at DFCO.
    2007 Corvette C6 Vert. A6
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  5. #5
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    Could be the cat test as well.
    It doesn't have to be perfect, it just needs to be done in two weeks...

    A wise man once said "google it"

  6. #6
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    He's been complaint about it for a few weeks so it's an ongoing thing.

  7. #7
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    engine diag-->exhaust--> Post O2 test and Catalyst test, disable them both
    Post a log and tune if you want help

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  8. #8
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    I will give that a shot!