Fuel pump rears it's ugly head when you stomp it - it's not RPM dependant.
Make sure you don't have a dead spot on the TPS, and clean your MAF - gently - with rubbing alcohol and a Q-tip. That may also fix your idle.
Restricting the EGR is not a good idea. EGR is there to prevent detonation and allow more timing advance at the lean mixtures the engine runs. Having it work is a good thing.
Make sure the short hose to the PCV is not collapsed or leaking - heck just replace it.
Try poping the linkage from the IMRC vacuum pot and wiring the secondaries open to see if that's it.
It didn't start doing this after you put the intake back on did it?
