BMW M3 Forum (E90 E92) - View Single Post - Question On M3 & Cats (Also A Q On Akrapovic)

rzm3 · 10-29-2009, 11:49 PM

Correct me if I am wrong...

The cats are downstream of the O2 sensors, so regardless of what kind of cats there are, the car will still throw a code because it cannot "see" the cats...

Still better for the enviornment though

10-29-2009, 11:49 PM	#8
rzm3 Moderator 673 Rep 4,737 Posts Drives: E92 M3 Join Date: Aug 2007 Location: USA iTrader: (18)	Correct me if I am wrong... The cats are downstream of the O2 sensors, so regardless of what kind of cats there are, the car will still throw a code because it cannot "see" the cats... Still better for the enviornment though
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