BMW 3-Series (E90 E92) Forum - View Single Post

falconey · 10-03-2019, 05:05 PM

They are supposed to look for a cat, but as long as the secondary cats are there they won't have a clue that you have a catless downpipe.

10-03-2019, 05:05 PM	#12
falconey Captain 483 Rep 681 Posts Drives: 18 f80cs, 21 f97 Join Date: Mar 2013 Location: atlanta iTrader: (0)	They are supposed to look for a cat, but as long as the secondary cats are there they won't have a clue that you have a catless downpipe.
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