Anyone seen this issue? Installed right after delivery and had this issue ever since. Curious to know what could be causing it, checked heat shields and exhaust hangars, not rattling against that. Possible manufacturing issue? Its a 335i M Performance Exhaust fitted to a 328i.
Thanks in advance
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2014 328i MG , BM3 Stage 2, Injen Intake, M Performance Brakes+ Exhaust, CP + BP, FMIC, High Flow DP, NBT ID6