Owned my s1 a week and done the turbo allready, out in it this morning taking it to rolling road setup and backed of the excellarator onto overun and massive cloud of blue smoke p***ing out the back.i put foot back down and it stopped still drives perfect and boost is fine, just won hell of alot of smoke on overun,so a mates got a new saph coz turbo charger hes going to strip and rebuild into escort housing in theory creating hybrid stage two turbo so should be back healthy again tommorow evening cheers for now andy