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  1. KFX450R Air Box Airbox Intake CFM Performance

    Engine/EFI/Drivetrain
    hi i have 2 kfx 450s one has a fci intake w box a procom and full exhaust the other has a full exhaust the kawi adj ecu and a fuel controller but a completely stock intake and airbox setup. I know the fci is the best but i like the cfm setup anyone have expericence w it and how much of a drastic...
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