95 z28 lt1 dies

I have a 95 A4 z28 with a LT1. I just rebuilt the motor, ported heads,cam shorty headers. Before i rebuilt it the engine was really hard to start. It sometimes not start but try to. The exhaust had strong fuel odor to it. When it would start it ran like a champ without a probelm. Now it will start no problem and after it heats up it will just shut off. No sputtering no warning just turns off. It was a new opti, MSD 6al box swapped ignition modules and has a msd coil and wires. I was able to log it with EHack and scan9495. Can i get a couple guys to look at the files and tell me whats going on? i cant upload the files but can email if requested. I cant figure it out Thanks