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  1. +3 tune premium fuel?

    I just installed the +6 tune with after filling up with 93. I plan on reflashing to the +3 tune for the winter; should I continue to run premium, or would it make any difference? I ran 89 before reflashing. My Civic is stock otherwise.
    • DKL
    • Thread
    • Replies: 1
    • Forum: Hondata


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