Dimeomboost

I have a 5.3 swap with stock computer I had pcm for less do my startup tune they have a great reputation here I've been told so I get it home wire up msd6010 box and it fires right up sounds amazing with turbo and tick performance cam but then dies does this 50 more times I've tried chasing down all.wires and are good grounds or key ignitions all.work relays are good injectors have at least 12 ohms I was told by my friends who brought his meter over I'm not real great with electrical but I did my own harness and it works if u spray starting fluid it will run longer so us this a vats problem that may have been left in computer on accident or am I missing something

94 s10 5.3 3.903 bore forged rotating assembly 853 worked heads all new btr valve train everything is brand new 76mm on3 turbo tick stage 2 turbo cam for ls1 stick computer converted to stand alone th400 with brake is what I'm working with thanks for any replies