hey guys i know this is kinda a stupid question but i figured u guys would know best, i recently added a high flow cat to my exhaust and it got very raspy in the higher rpm's i've checked with a shop for resonators they have 2 sizes 12" and 18? my ? is will the 18" quiet it down alot? i like the loud exhaust i just dont want the raspy sound anymore. what u guys think?

I would suggest the 12". It won't quiet it down a whole lot, but it will get rid of that top-end raspiness.

sweet thanks alot, i love the way the car sounded before the highflow cat, so im just trying to get it back to soundin like that, volume doesn't bother me, i just hate that raspy sound, especially when the engine is cold, it drives me nuts