Exhaust

[Owned]

Right now i have welded in flowmasters with a mac prochamber, what kinda differences would i see with 2 1/5 tubbing or massive 3 inch? would 3 inch make it worse?

 

[chrisbudl1]

you'll probably lose back pressure, I did with my offroad h

 

[SonicB]

your exhaust tubing size should match the output of your engine. too big or too small is bad. a 3" dual is way too big for a 260hp engine. a 2.5" dual exhaust will support a 400hp car.

http://www.dynomax.com/techsupport.stm

http://www.flowmastermufflers.com/cgi-bin/flowmaster/faq.html?id=9ivTs8eU

http://www.magnaflow.com/07techtips/faq/question10.htm