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jb1 issue.
Sup fellow f30 members, so I have a 328 n26 with a jb1 with 5k on the car and i've noticed my car makes a grinding sound on start up and changing gears from 1-3k rpm. Not sure what it is, might be a charge pipe? Anyways should I remove my jb, clear it, and take it in? Don't think its normal.
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