throttle lags

when im idling the engine seems to take while to respond to my throttle movements, if i open it fully for a second and then close it nothing happens, but it makes a loud whooooooshunk noise from the intake manifold. Any ideas what would cause large delays in throttle response?

the torque manager, maybe?
I know it controls the throttle from a stand still, but not sure about once your rolling.

Torque manager looks at the throttle position. If you open the throttle all the way in short order the computer wont allow it to open unitl it decides it is safe....(in case you accidently floor it for a second). That might be what is happening to you.