Holley Sniper EFI

I recently purchased one of these units for my 454 chevy, running it with a robbmc powersurge. Im having some issues with it at idle (thing stalls and dies within 5-10 secs) still diagnosing if i have a fuel problem or if something is up somewhere else. Will post more info when I get some things figured out. Bought from Johnny at pace, great guy to deal with.