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Thread: Flex fuel

  1. #1

    Flex fuel

    Would you lean or richen PE Table to start? E45, the table still applies right? It just uses the current alcohol percentage in the fuel, then applies the math? Thanks

  2. #2
    Tuning Addict 5FDP's Avatar
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    May 2012
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    Rogers, MN
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    I go leaner with more alcohol content. On my truck I ask for 12.4-12.5AFR on gas and lean it out to 12.8-12.9 at higher than 60% alcohol content.

    Off hand I forget my exact numbers I used in both EQ ratio's.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.