Italianjoe1

With a turbo that big I would expect more, but with everything stock (i'm assuming you didnt' change any manifolds or anything at all), I guess it is possible. Throwing that much boost at it and not making more power means you need to work on the airflow and efficency of the motor next.

Pull the head. Looks like a valve came apart or something, but the piston coming apart could have interfered with the valve. Regardless, you have head damage