It's still a mystery as to why some people experience a lean condition with the Bosch lll's. yet the majority of people over the past 12 years love them.

 

 

That's the understatement !

 

Does your fuel pump prime when you go from key off to run (not crank) you should be able to hear it.
-- If No, check to see if you are getting the command at the fuel pump relay etc. At one point a few years ago I had an issue where the ecu wasn't getting full voltage, and the relay was only getting about 9-10 volts on the engage wire (12 on the hot wire) So when you started to crank the car it would drop even lower and the fuel pump wouldn't run. But if you used starter fluid or gas in the intake to crank it, the oil pressure switch backup circuit would drive the fuel pump, but the relay was only getting 9-10 volts and not enough for it to trip the relay on. That turned out to be the little wiring block beside the battery that has a few fuse-able link wires running off it (I came very close to replacing the ECU on that one).
-- If Yes, more than likely your injectors are shot and sticking with old gas, they tend to still run ok once you get the car running but they will not spray correctly on the start cycle. I've had that issue also. New gas will not fix it, nor will injector cleaner in the tank. I would replace them, along with the other items you listed if you have the budget and intend on driving it without fear of it breaking down.

Its amazing when you have owned a car for 23 years how you have experience almost everything it can throw at you -- though now I have an LS1 so I have all new issues to learn