dude chill, most likly you have a leak. Becouse of that your Turbo's wastegate cannot operate properly. basically, car thinks that its fine, so it doesnt limit the speed of the turbo.
any ways, check for leaks after the turbo to the Intercooler. and from intercooler to the throtle body. Also check small hoses as well that go out from them on the way. The air hoses.
Also you can PM or AIM me but dont bug me too much, usually I watch Star trek or Futurama, so in comercials I can type
PS. Turbos main cooling is the oil. So dont turn off your car after a serious drive.
PSS. Car looks awsome, How much one of these.