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TQC Fuel injection problems

I have an 83 TQ.  It has several problems.
It runs rough at idle when it is warmed up and misses every 2-3 seconds.  I
have installed new cap, rotor, wires and plugs.  The rest of the ignition
system is computer controlled.  I do not believe that the problem is
ignition related, feel free to correct me.
	The Control pressure is 15psi on start up and 36psi warm.  The system
pressure is 68psi but the needle on my gauge flutters about 3-4 psi.  I set
the duty cycle last night to 50%.  It fluxuates between 47-53.  When I
ground the white/blue wire that is used to check the duty cycle the engine
speed increases to about 1200 rpm and the motor runs smoothly and does not
 	When the car is cold it will start right up stumble for 5 seconds then
die.  It will then start up again run for a little longer and die again.
Usually on the third or fourth try it will remain running, but it will only
pop and stutter until it has warmed up some.  I live in southern California
so it is not really that cold.

I am open to any and all suggestions.

Thank you in advance

Jeff Hemmerlin
83 TQC
95 S6