BMW 3-Series (E90 E92) Forum - View Single Post - 335iS Thread

Imperator · 03-11-2011, 04:38 PM

Um, I'm pretty sure the stock 335i exhaust has a crossover in the system just after the secondary cats, upstream from the mufflers. There's another crossover built into the mufflers to accommodate the bypass valve in the left muffler outlet.

03-11-2011, 04:38 PM	#370
Imperator Major 52 Rep 1,175 Posts Drives: 2010 E92 335i Join Date: Mar 2010 Location: Plano, Texas iTrader: (8)	Um, I'm pretty sure the stock 335i exhaust has a crossover in the system just after the secondary cats, upstream from the mufflers. There's another crossover built into the mufflers to accommodate the bypass valve in the left muffler outlet.
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