Well, I guess you'd have to narrow things down:
I assume your battery is in great shape and has a full charge, and I assume you can hear your fuel pump go 'whir' when you turn the key to 'on' before starting.
If this is the case, then logic points to the computer. I am not saying it is bad necessarily, but something to do with it is wacko. Perhaps you have a loose connection somewhere, like at the main wiring harness entry point to the computer or at the AFM or Air Temp Sensor or throttle body sensor.
Maybe this will be a good start?
Let me know.
-Hal