i posted awhile ago about it. Runs really rich, puts out smoke, stalls out at idle, will stall out at stops if you don't keep it revved up. Just replaced the Fuel Pressure Regulator, and it has a new Throttle Position Sensor. No change. There's no change when I unplug the Air Mass Meter either.
I'm kinda lost about where to go to next, I don't want replace the whole fuel injection system. Any idea?

 

Have you checked for vaccum leaks?
Have you checked the O2 sensor?
Have you checked the coolant temp sensor?