rb wont stay on...any suggestions?

[kenseis14]

ok....i was driving late one night last week in the rain and my car suddenly cut off. a few days later i tried starting it up. it cranks and turns over ever time but shuts off right after. i found a water leak where the cpu is and its a little wet still but not much. i checked the alternator at auto zone and it passed. i checked the fuel pump, vacuum hose, battery, lower wiring, fuses, and gas. what else is there to check? could it be the the cpu is shorted out or does it need to be reprogramed if thats possible?

any thing will help right now....its my daily. its a s14 rb25..thanks guys