when i start my car up in the morning it has to have my foot on the gas or it will die for sure every time. It warms up quick and stays at a good temp, but then the tach and air/fuel gauge bounce like this thing has got a set of drag cams in it (which it doesnt) i know when the intake manifold was installed we did this bypass thing which i totaly forgot what it was but supposed to open few more hp. but my car will also sometimes idle at about 1100-1200. here's the stuff i have.

 

Did you bypass the FITV (fast idle thermo valve) ? If not, take it off and clean it inside and out and see if that will help out your idleing problem any. It's located under the throttle body.