i'll post this here as theres more sc'd people here then in the 2.2. I recently put a s/c on my 2.2. Vince tuned me and I was fine..had to put a new MAP inas mine was dead. after driving a bit at a stop light my idle kinda got funky 500-1500 bouncing and would stall if I didn't keep my foot on the gas. Now he retuned me and its doing it all the time. He mentioned my TB was kinda tweaky during WOT sometimes.
Any insight on whats going on...what to look for and whatnot?

 

i have similar problems, i'm still throwing code P0102, vince says my maf sensor isn't getting any signal, it also stalls at low rpms

 

mine did this once i went 2.8 60's
when i get a chance im gonna clean the TB and the MAF as they maybe dirty

 

https://www.cobaltss.net/forums/2-0l-lsj-performance-tech-47/idle-problem-cure-finally-116051/

maybe this could help. not being a douche but the symptoms are similar.

 

edit

 

well mine is being caused by my maf sensor not the throttle body

 

My old ss sc did that all the time..... I never ever figured it out

 

well mines not too bad now since I tuned it back to the origianl s/c tune i had but its still there....kinda makes me mad lol. I am going to clean the TB tomorrow and hopefully that works...But i just put the tb on two days ago and driven maybe 10kms since then and I just cleaned it last week lol.