Over Boosting? Need some help guys

[1990GSX]

Edit: I missed this post:

Originally Posted by talonsway

so i removed the arm and took it for a drive, at about 4-5k i was seeing about 20 pounds of boost and at about 6/6.5 almost 30 pounds of boost. So if i am thinking right this means i found the problem, and that is that my waste gate is bad? So start shopping for a big 16g Waste gate actuator?

Do this:

Originally Posted by asshanson

30psi is a ton of boost creep, wow.
Did you try hooking the actuator directly to the intake manifold vacuum source?