No start (actually starts then dies)

[benebob]

Okay the race car is still not running. It is getting fuel to the manifold but won't run for more than a few seconds then dies. The idle is pretty rough as well. No codes inside so I'm kinda at a loss. It died while on course kind of sputtered (like she was running out of gas) then nothing since. Any ideas on where to start looking next? I've replaced the fuel pump relay with one from the headlights and it does the same thing.