Blown Exhaust Gasket or worse?

[Jordanbutter]

While driving, my car will bog down, I mean I can feel a power loss, the exhaust will sound deeper and popping almost as if it was underwater. Also the boost will only go to about 9lbs. But if I play with it, rev it up, drop the revs, shift through a few gears, it will go away, for the time being. Any ideas? Thanks for the help.

 

[skinnykenny84]

First thing that comes to mind is check the turbo. Pull the intake off and check for shaft play, esp in and out. Just before 2 of my old turbos went out it gave some similar signs. Acted as if it didnt want to boost and if I let off the gas and back on it would boost. You can also check your plugs/wires may be a ignition problem as well.

 

[Jordanbutter]

The plugs are brand new and the wires are fine.

 

[oldman]

Boost leak test first, if problem persists after you fixed all leaks and able to pressurize the intake up to 20psi, come back for more.