Hey Guys, Im looking at getting the FG tuned in the next month or so, and rang up my local exhaust shop to get a quote to get a high flow cat installed. He was trying to tell me that the dump pipe has a restrictor in it that needs to be removed, but I havent heard anyone on the forums talk about it. Does anyone know if this is true? and whats a decent price for supply and install of a 5" 100cpi cat? he quoted me $430 for the cat install and $50 extra to remove the 'restrictor', sounds like a fair price but im not sold on the restrictor thing. Cheers