big turbo, low boost, HELP!

[Rob1]

ver nice way to explain that lol that makes since. what are the odds of a crack in my intercooler? its factory, and i had an air pocket in the coolent system so it was pushing all my coolent out of the resivoiur overflow and onto the intercooler directly below. the car over heated pretty bad from lack of coolent and the next day is when i changed the oil and disconected the ecu then drove it to work. thats when i noticed the reduced power.

Everything feels the same as far as low end torque and such but when the turbo spools it begins to sprint forward but then it just levels off and feels much slower than before. I got no ideas besides aboost leak. the car is parked untill this issue is resolved any other ideas from you guys on how to find out what wrong?