what can i do for a ecotec 2.2 throttlebody? are there any from other gm cars that will fit or do i have to find an after market one. all i have done so far is intake and exhaust, and i dont want it to be over kill.
RSM and Reveco make one for the eco. Search around and you will find them.
2012 HD VRSCF
2010 Ford Explorer
2006 Ford Ranger
2004 Chevy Cavalier
not worth the cost IMO on an eco. I'd say your next step (looking at your mod list) should be a header and high-flow cat. You'll get a very nice gain from the header.

-Chris