Ok, I don't think you're seeing the whole picture here. TTing your car isn't going to be as easy as buying a turbo kit and an intercooler and bolting them on. You're probably looking at around $2K worth of parts (fuel upgrades, ECU upgrades, etc, etc). If you get all the other parts but keep all your stock internals and compression, you could probably run 7-9 psi maybe? (someone correct me if I'm wrong, I'm not exactly sure)