Mandrel bends will give you even air flow through the corners, where as "crush" bends restrict airflow through the corners.alti97 said:what's the difference between the two pipings?
Ehh, in the section you decided to quote meTweekersAltima said:It can be found at muffler shops. And it doesn't cost MEGA bucks...just 75-100 bucks more.... At least here in Socal
The muffler shop owner that did my catback system said mandrel bends won't make a difference for the occasional street racer, it's more for professional racing cars where that 1-2 h.p. can make a difference.TweekersAltima said:if i saw some dyno proof that it was just 1 hp loss, then maybe i'd consider the cheap piping
I'm not sure if this is faq'd, but it should be. As a matter of fact that entire site should be recommended reading for any newbies (read it myself and answered many questions). Good info and explainations.flarearrow said: