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  1. High Pitched Whining help

    Newbie Discussions
    I drive a 2007 fj 6mt 4.56 gears 35" tires afe Intake MBRP Catback exhaust Unichip TRD quick shifter I live in flagstaff and was recently driving down to phoenix and about an hour on the high way i noticed a high pitched whine that would get louder as i continued to press the accelerator. It...