Hi guys, I'm preparing my car for stage 2 and I want to do it properly so I can get the maximum out of the remap. I plan to install a full exhaust system, 3" decat to 2.5" from the decat back. FMIC, A decent welly cooler with 2.5" piping, not the cheap ebay kits. I uprated to a silicone tip off ebay and I can see that it's a lot less restrictive than the standard tip with the metal flattened section that goes to the turbo. Anyway I'm hearing about oversized tip's and how they claim a 12 BHP over stock and the one I have apparently doesn't flow any better than the restrictive standard one? I don't understand how you get 12 BHP from a slightly bigger pipe when it's only the inlet side of the turbo anyway. Does this mean I'd get say 252 BHP on a stage 2 rather than 240 or so without the oversized tip? Or are these gains something you get when you go k03s hybrid and shoot for 300 bhp?