In the fight between GM performance exhaust, and magnaflow.
Who emerges victoriously?

Who gives more bang for the buck?
I'm curious as to which of the two exhausts provide better performance.

Discuss.

 

I just installed my magnaflow catback this weekend and i absolutley love it. It sounds great. You can feel feel a slight gain in power down low, nothing too serious, but the gain is deff noticeable... I say magnaflow FTW Deff get it through turbotechracing, they ship fast, 3-5 days depending on where u live. I got mine in 4..AWSOME!

 

depends on what other mods you are going to do. They will net the same gains if you are anything under 240ish whp after that the magnaflow would be better because the piping is 2.5 as opposed to 2.25