I just bought a new obx muffler. What size piping would be best to put in with it?
in general 2 1/4 inch is fine from the cat back, you can go 2 1/2 inch but anyting over 3 is more for forced induction. so i say 2 1/4 is cool 
I just bought a new obx muffler. What size piping would be best to put in with it?
in general 2 1/4 inch is fine from the cat back, you can go 2 1/2 inch but anyting over 3 is more for forced induction. so i say 2 1/4 is cool