A lil advice please fellas. Not wanting to go mad on the addon front of my Williams, I was wondering.
All I have so far is a piper-x filter element, would putting a de-cat pipe on my Williams make much difference ?. I would be using the standard exhaust.
I have heard so many different views, some people saying upto 35% of power is lost through a cat, others saying it will degrade the performance as the back pressure would not be the same !?!?!?!?.
Opinions here please....Thanx guys and girls.
Bill.