getting fuel/timing control DOES mean you can boost 10psi(or more) without fear of trashing the engine, look at some of the p5's on stock internals, running 14psi with a BIGGER turbo. Its all about the tuning...Pkay said:and getting a power fc doesn't mean you can do whatever you'd like to your car and have no fear of detonation.
Getting forged internals does mean you can boost 10psi and not be in fear of trashing your engine.