your car has a complex turbo setup...dont be like all the habibs and put a turbosmart valve inline and turn it up...basically you'll stuff it all up.. by putting a high flowing exhaust on the boost will rise itself ..then free up the intake a high flow intercoola and you'll find the boost will creep up to the 14 mark itself ...push for more you'll lose realiability but if you'll want more then be prepared to spend the big bucks...