Stevelawrie

Hi guys wonder if anyone can shed some light on my problem. I just rebuilt my uk 300 using a wrx doner car which was running perfect with no issues. Since I've changed everything over including Ecu but now my car has no turbo boost at all and it comes up with a swirl flap fault code. I know the car is a sti so are there differences in the wiring loom between the wrx and sti? Both cars are 2002 models and both uk models