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Thread: What to set b3103 at

  1. #1
    Junior Member
    Join Date
    Apr 2018
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    26

    Default What to set b3103 at

    Hey guys looking for some info on B3103 flex fuel default percentage. Is this supposed to be set at what fuel the vehicle was tuned on or is it when the pcm adds in the ethanol timing adders.

  2. #2
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003
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    28,403

    Default

    Set it to whatever fuel you run.

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