What exhaust ?
 

I need to replace my exhaust and would like to get a 5" stainless system. What is a good system to get? What differences did you notice with the 5"? I am running the stock 4" without the cat and a MBRP straight through muffler and I am ok with the sound it makes now and dont mind if it gets alittle louder.

5" isnt really needed unless ur going for huge numbers, but my buddy had a 5" straight pipe on his CR and it didnt sound too bad, but it was LOUD! if it were me, i would stick with MBRP

Since I am changing the exhaust I was lookin at the 5" for better mileage on trips, should help right?