I just want to thank you again for the help. I used some throttle body cleaner to spruce up the MAP and EGR and like magic, the car is working perfectly. Once I knew what parts to look at I was golden.
Only other problem I'm seeing on the car now is the transmission pan (gasket around the bottom-plate of the transmission) appears to be leaking a bit. Before I go unbolting that to replace a gasket, is this as simple a job as I imagine it to be? It appears to be just bolts holding on a bottom-panel, so I feel as if I could drain the tranny, remove the bottom plate, replace gasket, and bolt everything back up. I'm not certain however, that there aren't things held in place by that pan - anything I should worry about before yanking the pan off? I'm pretty sure taking it off won't end in a showering of assorted interior transmission parts, but a quick googling doesn't have a description of the job so I figured I'd at least ask before I do something stupid
On the same coin, should I attempt to tighten bolts around the gasket to seal it or is this smarter to simply replace it?