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Thread: What would cause 2019 mustang not to read correct E85 % correct

  1. #1
    Advanced Tuner
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    What would cause 2019 mustang not to read correct E85 % correct

    Car was running perfect racing with 85% E. And hp tuners updated scanner and now
    It reads lower % of E -then whats in car , no tuning changes were made .
    Tested fuel full E85 in tank - But reads diff % did KAm reset. And re flashed tune
    No fix yet
    Last edited by paulsmithsr; 02-10-2020 at 01:21 AM.

  2. #2
    Advanced Tuner
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    Any one

  3. #3
    HPT Employee Eric@HPTuners's Avatar
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    Oct 2007
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    Nothing in the scanner changed
    Eric Brooks
    HP Tuners, LLC

  4. #4
    Advanced Tuner
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    ok thanks did program change ? it did a update

  5. #5
    Advanced Tuner
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    if the only change was an update then simply roll back to verify
    decipha @ EFIDynoTuning
    http://www.efidynotuning.com/

  6. #6
    Advanced Tuner
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    Ok figured out