Rob Spec C
Octane Boostaholics
Looking into getting a full de-cat hayward and scott exhaust system for my B4. They have offered me a 3.5 inch back box or a 4.5 inch jap style back box. My car already has a 4 inch box on it, not sure what make or anything as it came on it. I do like the size of it but not sure which to go for now. What would you guys recommend? How much noise difference would it make and would there be any performance difference? I have been told that its probably best to go for a full system when changing as i had originally though of just going with the de-cat down and centre pipes and keeping the back box...
Would any of you recommend better sytems to go for or is H&S one of the best on the market?
Would any of you recommend better sytems to go for or is H&S one of the best on the market?