BMW M3 Forum (E90 E92) - View Single Post - Replacing primary cats with secondaries to avoid CEL?

ScorpionT · 08-06-2011, 04:59 PM

You could just replace the primaries with straight pipes and re-install for emissions. The way you are talking about sounds like more work than necessary.

08-06-2011, 04:59 PM	#3
ScorpionT Private First Class 6 Rep 101 Posts Drives: 335i, SL65 Join Date: Apr 2011 Location: Arctic Circle iTrader: (0)	You could just replace the primaries with straight pipes and re-install for emissions. The way you are talking about sounds like more work than necessary.
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