Quote:
Originally Posted by bmw_m2_cali
Could this be from bad gas?
https://s.amsu.ng/p0ebEDPcZpVN
It is a stock N55 M2 (minus a few cosmetic touches). I brought it in to the dealer, but they won't look at it for a week and I'm left wondering when I will get my car back/how serious this is.
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Sounds like the exhaust flap is rattling.