variable octane

  1. Troutrad

    Tune Question - Variable Octane

    I’m looking into a tune for my ‘19 SCREW. I’m just learning about tunes, realize potential warranty issue but am still interested. I found a tune with variable octane setting which I like as I can’t get 93 where I live. The following is from the tune info on Gearhead Tunes: “Perhaps the most...
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