just brought a s3 225 turbo the other month and having problems with boost now! fitted a bailys venturi dump valve and a k&n 75i induction kit. since fitting cars been running fine but now after starting up the car and driving off thismorning i seem to have lost nearly all of my boost. I have checked all hoses and they are fine, vac hoses are fine so not sure. car feels sluggish and dump valve hardly even working! i am gettinga dumpping sound through my induction kit if than meens anything to anyone?. another thing is when i fitted the d/v i seemed to hear the wastegate chatter.... not anymore... im thinking maybe acctuator but cant be sure. anyone have any idears??? Thanx