im having almost the same symptoms
hopefully this helps
Bad MAF, ok to run unplugged? - Corral.net : Ford Mustang Forums

 

well i found my problem
thanks to LLFordMan and Stealth Mode for your input and trying to help

 

What Was The Problem Share Info Please..

 

well one SMALL problem that had a little effect was the AIC. and its still bad but my car is running great now for the most part.
but the main problem was a small vacuum leak i should have changed when i swapped the intake.
it was the little hose that went from the intake to the little emissions box on the bottom left side of the engine bay. the hose was dry-rotted the cracked so i ripped it out and plugged the hole and now its great