The car starts fine when cold. But when the engine is warm(hot) it will crank fire but then the rpms will drop all the way to 0, sometimes it will stay there sometimes it will rough idle around 400. After giving the car some gas it will then idle normally around 500-600. I know this is common but i want to be as specific as possible when i try to fix this.

p.s. it didnt start doing this until after i installed aluminum ducting ram-air, perhaps i knocked a vacuum line loose?

 

Check for vacuum leaks, a sticking EGR, or TPS/minimum air adjustment. Is it TBI or TPI?

 

its a tbi