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Thread: 11 Mustang 5.0 coyote problem with Flexfuel enable / lost of power

  1. #1
    Potential Tuner
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    May 2022
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    11 Mustang 5.0 coyote problem with Flexfuel enable / lost of power

    Hi,
    I've a mustang 2011 with 5.0L coyote engine.
    In France we run often E85 (all my others vehicles like hemi motors)
    I want to enable Flexfuel option but unlike F150, many FFV tables are zeros. So after many search and Goat Rope Garage videos, I change my tune. But I've lost of power and engine show hesitations at low rpm/constant speed. (No MIL)
    I've attached my tunes and log after changes.
    (I've also no change on LTFT but I see many have this problem, I don't know why)

    If someone has an idea

    Thanks
    Attached Files Attached Files

  2. #2

  3. #3
    Potential Tuner
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    May 2022
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    3
    Quote Originally Posted by Jackson3010 View Post
    Thanks,

    I looked at your tune. I was missing some unfilled tables, the engine works well now, the LTFT corrections seem to work, I haven't yet had time to make a log to validate but it seems good to me!