Yes you do....It takes time and money to make a Turbo kit work like you want it..you should PM Das Schmooo...he knows basically everything about a turbo setup....Well you could make your own setup for about 1.5k or you could just buy a kit for 3k..if money isnt an option for you..you would also need to find a Fuel Management System to manage that new setup..and also take it to the DYNO for a couple of runs to get everything square.