Curious...

[Vortech347]

Has anyone ever done a back to back dyno test between aftermarket muffs and the factory ones?

I've just seen alot of posts/pictures about people doing big bad ass long tubes and running them down to 2.25" into a stock muffler.... I could understand maybe opening the hole up to 2.5" at least... Do the stock ones flow THAT good?

A friend of mine did only a muffler change on his supercharged CTS-V and picked up 25rwhp! (he owns the dyno and does ALOT of before/after stuff) they were 14" magnaflow's.

Just curious...

[Vortech347]

So the stock mufflers are just as good as the aftermarket ones with flow?

[red]

I've not seen anything comparing our stock mufflers to aftermarket ones. When I was looking for aftermarket mufflers, I came across several flow tests and dyno comparisons for common Mustang options. Most of the results were very close.