Downpipes - Page 2

wantsti118 · 06-27-2008, 10:21 AM

Quote:

Originally Posted by FlyingPerformance

well the cobb is a 3" until about 3 or 4 inches from where the downpipe mates to the catback, then is tapers to 2.5 inches to make it compatible with the stock catback. If you go with the cobb catback it starts at 2.5" to be compatible with the stock(or cobb) downpipe and then expands to 3". So in reality you dont have that large of a restriction. If you are worried about boost creap or spikes, go with a 3" catted down pipe and what ever catback you want. I see you are in so-cal, definitely go with a catted down pipe to try to appease the smog police out there.

thats for the good info!!! i understand better now about the exhaust measurements. in your opinion which tbe would you recomend. dont really want anything to loud but would like a quality product.

La Mer · 06-27-2008, 10:26 AM

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06-27-2008, 10:26 AM	#17
La Mer NIИja Car: 2006 STI (SGM) Location: US - Southern California Posts: 38,192 Join Date: Jan 2006 Trader Rating: (5)	Re: Downpipes Welcome to the forums... Please search... These topics have been covered close to 100 times. Start here: Engine, Power, & Performance Threads of Interest, read, then post a topic if needed: This ad is not endorsed by this member. Please register or login to hide this ad.