Well, i'm starting to get annoyed by the 4-1 header, no cat, and 2.5" piping. Which would be better for the quieting purposes, a high flow cat or a resonator somewhere in between? Also, anyone recommend a good resonator or cat?

 

Well seeing that a high flow cat and a resonator are completly different things, i would have to say get a hamburger.

 

um ok, i know they are different things, i want to know which to get for quieting purposes.

 

resonator. If you look at the first page there was already a thread that answered this question.