took out the whole manifold and discovered that the waste gate was stuck. had to a real hard time gitting to the waste gate. the turbo was hard seperated from the manifold but the gas sorted that.
the problem with it was one of the little paddles in the waste gate was jaming the only sollution i could find was to grind a bit off it. i cleaned everything and re assembled. power has been restored.
Thanks all for the help it is much appreciated