whats deepest, least raspy and least poppy? 2.75 or 3" piping?

[mickeys]

I have a 3" catback, it's pretty poppy, not that raspy though, just LOUD

[zlightning]

depends on the muffler and other mods.

[99firebirdconv.]

3" is automatically going to be deeper....is that what you are asking? :D

[Arctc Wolf]

get a resonator in the I-pipe or put resonated tips on in order to get rid of the popping. my 3" flowmaster 80 cat-back popped really bad when they first put it on w/o tips, and then when they put the tips on, it didn't pop at all. it'll still be pretty loud, and it'll be smoother than it was before.

[pull7g's]

What kind of tips do you have Arctc Wolf?

[Seppo Kaitainen]

I think the resonator in the i-pipe will do little for the popping. I believe the popping is mainly due to oversized tips.

I think an 3 inch I-pipe will make it louder/deeper, but I think that rasp is mainly muffler, and that the popping is mainly tips.