Originally Posted by
zippyobrien
It's just to big a diameter for the engine. You'll loose lots of low down tourque and responds for very minimal gains right at the top.
I ran an fiesta rs turbo exhaust on my puma engines zetec s. It ruined it so it came straight of.
Interesting, however 2.25" pretty much doesn't exist with the majority of steel suppliers.
Originally Posted by
Oranoco
Exhausts are far more complicated than some bent pipe under the car. Probably why PowerShonk make such a pigs ear of it so frequently.
In all fairness, they're not.
It gets complicated when you start factoring in higher flowing heads etc etc.