thats what i thought i went to speedshack in west drayton today and they said if i was you id try a different rolling road before you spend that sort of money.. they said that jamsport would be worth a try even though there far. but they have a real passion for working on rs turbos unlike power enginering who probably prefer having people with imprezas and evos and a lot of money to spend... so that might be a differnet option.. i dont have a great deal of faith in power enginering because iv had 3 cars set up from there and every one of them there main advice is to put a 5th injector on there..