Hey there i need some help with my car. It's a 2001 gtp has 121000 just got it for 650. Was running great then and now if I go full throttle it makes a noise. Like if my turbo is locking up and the car try's to stall. I'm going to try a new coupler there's some play. Could that be doing it or is the turbo on its way out any help would be great thanks.