BMW 3-Series (E90 E92) Forum - View Single Post - Does catback void warranty, or turboback?

Terry335 · 04-19-2007, 01:06 PM

Nobody is seeing 20 or 50hp with catbacks. Maybe 10-15hp. One extreme example with a custom downpipe had a 26hp gain.

04-19-2007, 01:06 PM	#3
Terry335 Banned 96 Rep 2,587 Posts Drives: 335i Join Date: Jan 2007 Location: Socal iTrader: (0)	Nobody is seeing 20 or 50hp with catbacks. Maybe 10-15hp. One extreme example with a custom downpipe had a 26hp gain.
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