Alright, I'll keep it simple and to the point. Once my car is warmed up, she absolutely will not start. I can hear the fuel pump prime and the starter spins like a champ, but I cannot get the car to fire. No trouble codes.

In the morning, the car starts immediatly, but once it's warm, it will not start again until it sits for awhile.

 

EWEROCK,

Your symptoms could indicate injector and/or fuel pressure regulator leakage.

 

Is the fuel pump sounding normal, I had an aftermarket pressure regulator kill a fuel pump because once it got hot, it almost completely shut off the return line. Also check the MAP sensor.

 

On your warm start-up, try holding the throttle wide open while cranking (be ready to let off the throttle if it starts!). That will trigger the "clear flood" mode on the ECM and shut off the fuel injs. If it starts, that means the eng was flooded (with fuel).
Flooding on a FI car usually means one or more of the injectors are leaking fuel into the intake after shutdown. If eng sits long enough, the fuel will evaporate and eng will start normally.

Connect a fuel press gauge to the fuel rail. Turn on fuel pump. Shut off fuel pump and watch how fast the fuel press drops. It should only drop a couple psi then hold for a while.

 

just a thought.....
i've had problems with my 87 rs and my 88 iroc that sounds like this.....i would try the ignition module and coil.

 

I second the vote on a bad ign module.