Shop says it is a valve or a ring but neither of this cause boost go from 17psi to 0/after changing a turbo to cat gasket. Speed tuning chipped ecu, 3" turbo back stainless exhaust with test pipe, polyurethane turbo inlet pipe, 034 motorsports PCC system, n75j valve, forge adjustable diverter valve,new throttle body, new transmission multi function switch, leather in almost excellent shape (I small wear spot driver seat), CD/dvd/navigation, new tires (>1000miles), body in good shape, front mounted intercooler. Car was extremely quick. I drove the car, with no boost, 175miles on the day I took it to the shop. No noises, no smoke, no excess burning of oil. Just don't have time or place to fix or part out. $2000/obo