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TacticalGunnarM550 · 10-10-2021, 03:58 PM

Just a quick post to see if anyone has or knows any downpipes that won't throw a CEL, i purchased an expensive extended warranty recently or else I'd tune and not worry about it.

10-10-2021, 03:58 PM	#1
TacticalGunnarM550 Second Lieutenant 99 Rep 217 Posts Drives: 2018 M550i; 2017 430i Join Date: Sep 2021 Location: Upstate NY iTrader: (0)	Downpipe options that won't throw a CEL Just a quick post to see if anyone has or knows any downpipes that won't throw a CEL, i purchased an expensive extended warranty recently or else I'd tune and not worry about it.
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