Ive researched this and havent found anything...Im going to be changing my exhaust and I have decided to go with a 2.25" b-pipe with a stright through muffler, I was going to go with SKUnk2 High-flow exhaust but the diameter of the b-pipe is 2.36" in diameter, is this going to make a difference in backpressure and exhaust pulse, matched with the 2.25 sport cat or should i change my exhuast choice to meet the 2.25" decision. Thanks for any help!!!

 

it somewhat depends on what you want with what motor...i had a 2.5 on my b16 and i lost mucho torque but gained top end...i think it will flow smoother if everything is the same diamater