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  1. do i need an efi tuner with a slip-on? KFX450r

    Engine/EFI/Drivetrain
    i'm fairly sure that i need an efi tuner to run any kind of slip on or intake mod, but i've been seeing a lot ppl neglecting to buy one and just using the original fuel mapping... is that safe for my engine?:confused:
  2. Budget Slip-On

    Important Information
    i'm a racer on a budget. i love the titanium head pipe, so i'm only looking 4 a slip on. SUGGESTIONS PLEASE! :confused: i want a slip on that's the cheapest, highest horsepower, still trail legal(loudness).
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