Well heres the symptoms.

1. The car, regardless of clutch in or out, will not hold an idle. I have to hold it at around 2000 for it to not die out.
2. It sounds like the car is getting tomuch air (kind of sounds like its missing .. but i dont think so)
3. Out of the last 250 miles that its been doing this ... it cut out one time at 5000 rpm? It was a bit chilly out and i have a street port with stock fuel and a racing beat turboback .. so maybe there was too much fuel coming in?

My first inclination is to think that it is actually the intake manifold gasket? But what else should I be checking in case it isnt?

Jordan

 

http://www.teamfc3s.org/info/articles/idle.html