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While I have only had the car for less then a month, I have already come across a problem that has me stumped.
I was running up to 15# of boost peak, and now am down to 10-12#.

I have checked the intake from the turbo to the tb, and as much of the vacum lines as I can reach. I tighented everything that could be, and checked for air leaks with the engine running.

The boost still builds as it had in the past, but will not normally go past 10#, and when it does peak at 12# it is only for a short while around 4,000rpm.

This is my first turbo car so I really dont know what else to check, there is no boost comtroller, just a rre chip.
Please help.
O and this is the GTX

 

Take it to a shop for a pressure test.

 

anything else I can check before I spend money at a shop.

 

Check the turbo too.

You can build your own pressure tester with Home Depot parts.