I know that you said the throttle body is fubar'd, but the posts are separate topics, so I am trying not to intertwine posts too much, as it will become a mess. I read everything and take everything into consideration. It's just that I am trying to do so much to the car right now, I start to lose track of things. (I've worked on it for over 40 hours in the past 3 days.) I am probably going to just get a stock TB if you think the ZZP won't help much.
I haven't listed everything because I'm not entirely sure of everything that has been done, I bought the car pre-modded (yes I know, bad idea).
The car is a 2000 Grand Prix GTP with 102k miles (at least most of it)
The mods I know:
Cam (as far as i can tell intermediate)
Bigger injectors
High flow fuel pump
Headers
Catback exhaust
Stronger springs/Rockers
3.1 Pulley
Lowered
Full size intercooler
Apparently ghetto rigged TB (with spacer!)
Cone filter intake (HAI)
18" wheels
Tuned, but probably tuned like crap
Iridium spark plugs
A lot of electrical work has been done as well, since there used to be an amp and sub hooked up, and there was a gauge overlay hooked up. There are wires running to nowhere, my interior lights are pretty dim, fog lights no longer work, TCS is stuck off, and the DIC blinks.
I also just rebuilt the engine, replacing the crank and the associated bearings.