Im thinking of getting the sho y pipe (catless) that everyone is talking about. Does this mod really make that much of a differance? The sho pipe has a 2.25" inlet & 2.5" out. stock svt is 2.25". Also, the sho pipe will go back down to 2.25" to connect with the stock exhaust. I know that removing the cat will help a lot, but the pipe itself Im not sure. How much gain if any can I expect?
