No boost Question

[Ghostrider]

Hey so I am having some boost issues with my car. I was at a rally and was on the last stage and lost all boost. I cant find a boost leak anywhere, every hose looks good and is on tight. One thing I found strange is the car is super quiet now sounds like a street car, this car was pretty loud before straight pipe no muffler. I have changed out the gasket on the exhaust side of the turbo and the down pipe as it looked like it was leaking but no luck. Checked the waste gate its fine. When I changed the gasket I checked out the fins on the turbo and they rotate smoothly and none are missing. I really cant figure it out. Bad Turbo? any ideas? motor is a 2.2LT stock boost.

Thanks for the help

[mavx]

did you check the turbine wheel?

sounds like a completely clogged catatlyst, or the exhaust wheel is f'ed.