BMW 3-Series (E90 E92) Forum - View Single Post - Catless downpipes but keep orignal secondary cats

benzy89 · 12-09-2012, 08:44 PM

Catless DPs + Stock DP-Back Exhasut -- Because you removed the primary cats (Which are the only ones that matter), you will still need a DP Fix to Pass OBD Port Testing. You probably won't pass a sniffer test with just the Secondary Cats in

12-09-2012, 08:44 PM	#5
benzy89 Banned 79 Rep 2,396 Posts Drives: '08 E90 335i Join Date: Jan 2012 Location: Northern NJ iTrader: (3) Garage List 2008 BMW 335i [7.50]	Catless DPs + Stock DP-Back Exhasut -- Because you removed the primary cats (Which are the only ones that matter), you will still need a DP Fix to Pass OBD Port Testing. You probably won't pass a sniffer test with just the Secondary Cats in
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