I have been thinking about getting a b-pipe but with my powertech and y-pipe it will be loud unless i get a very large resonator. what size is the biggest the max can support with out a detriment to performance. p.s. it is already kind of a loud setup

 

I hear it is a strait through resonator so if thats true then no

 

Resonators dont kill your performance at all. They are cushioned on the walls. If your inner diameter is 2.5 and you get a resonator with a 2.5 inner diameter your fine. It may be 2.5 on the inside but the outside maybe 3 plus. As long as it is straight thru you should be fine.

This info is coming from me. I dynoed 321HP with a Greddy SP that comes with two resonators on it already