Performance and Sound from Highflow?
Hello i've kinda been searching around this site a little, but havent quite found what i'm looking for. I have a couple questions... When you guys put high flows on you 4.6 T-Bird was there a noticeable increase in sound? Also can you feel a gain in power? Can anyone direct me in the right direction to dimensions of the proper cat size for 2.25" piping. I have found that many memebers said that a 4" overall diameter is a good size to get? is that true? Thanks alot