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  2. Confused about Flex Fuel Tune

    Ah I see thank you for the advice 👍🏼

  3. Confused about Flex Fuel Tune

    The thing is i’ve heard that flex fuel is meant as a transition tune, and that you aren’t supposed to be driving on it. so that’s why im confused.

  4. Confused about Flex Fuel Tune

    Question. I have a 2019 mustang gt. I want to run 91 most of the time, and then on a few occasions I would like to run e85. Then I would like to go from e85 back to 91. Would I be able to do this with a flex fuel tune? From my understanding, when I switch from 91 to e85 I would have to flash...





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