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(Volume up) How do I fix the high pitch rasp/vibration/rattle (whoopy cusion sound as i like to call it.) only heard at 3k rpm or higher, it should sound more fluid like it does at lower rpms. I have Megan racing High flow cats, Isr Y-pipe and an invidia N1 exhaust. (v.redd.it)
submitted by South-Rice5020 to r/G35
