For an ITR with just bolt ons(2.5 collector header, and Comptech Icebox) will it really make a difference on which 2.5 catback you get??? I have not heard too much feed back on the RSR ex-mag(chambered muffler) on ITRs. Would there be a huge difference in power gains between the spoonN1 axelback/TIR b-pipe combo vs the RSR ex-mag catback, since one muffler is straight through and one muffler is chambered?

Thanks

 

Any feedback on the RSR Exmag catbacks?

 

I'm planning an exhaust soon too . I need something affordable, but no luck in classifieds. I was curious wether or not to get stainless or just find a muffler I like and let a good exhaust shop run some 2.5 pipe for me. I know plan b sounds like the cheap way to go, but besides the "bling", is stainless really necessary? I would also think that ss would be heavier. Anyone with any input?

 

If you have one fabricated, try to get mandrel bent.