Hondata

hi guys,
i have had my hondata s300 v3 for about a day and loaded a basemap on my civic turbo and everything was running perfectly. came back in this morning and not the fuel pump wont prime. put a live to it and nothing, so i thought id go back to the stock ecu and see what happens and it primed!
i firstly thought it was a relay issue or possibly jumer harness but now i cant see it being anything other than the ecu.
weve checked all the grounds and the fuel pump just isnt getting power with the hondata installed.
also when ive put the key into the start position it cranks but doesnt actually fire, whereas with the stock ecu it does run!
the green light on the hondata comes on for about a second when the ignition is on but then goes off and doesnt come back on if that helps..

do you guys think i should send it back and get it retested?
my setup is:

b16a2 block
b18c head
arp head bolts
550cc injectors
walbro 255 fuel pump
gt30 .60 a/r turbo

im really lost and cant think it can be anything else, but any help will be appreciated
thanks :)

Can you try the s300v3 in another ECU to see if the problem is with the ECU or the s300v3

Remove the s300 form the ECU and cut J1. Then put the ECU back in the car and see if the fuel pump primes when the key is turned on. If it does not then the ECU is the problem and needs to be replaced.