Contour Enthusiasts Group Archives Forums Modifications Duratec Performance Single vs. Dual Exhaust

my 2 cents worth:

I thought for a long while about having a custom single exhaust put together. I spoke to several people including borla snd msds. The guy at msds put it best with regard to fabrication. Crush bent (most muffler shops and my factory exhaust) tubing effectivly reduces your pipe id by 1/2" so 3" crush bent is equivalent to 2.5" mandrel bent. As far as the number of bends goes, he said if you can drop a matching diameter ball in one end of the pipe and it rolls out the other the exhaust gas wont care how many bends it passes.

Based on this, i gather that a manderl bent 2.5" system ALL the way back along with a good resonator and muffler should get you about the same numbers a good quasi-dual catback.

I was mainly looking for a stock (aka sleeper) appearance. I decided it would have cost me as much or more to build a custom system using high quality parts from magnaflow or borla including the mandrel bent tubing and fittings etc, as it would to just buy the borla or the brullen.

UNF, i placed my order for the borla before i read about the brullen, may do a borla vs brullen dyno test after i get my msds headers installed.