well the GTI 4 has 132kw! with more torque than the RSI aka sportivo. You have to get him on launch and shift in your torque range and you should nail him! the GTI is heavy too! Remember the RSIs power comes in from 5500 to red line! and GTI low end torque&power!
Greek yeha thats the easy way out! the whole piping is far better. its just an akward shape and goes down to the fog light. Try Ebay! it does sound mean and to beat a golf 4 GTI im sure ul do it! get an exhaust too! 63mm will help alot!