Hondata

so i got a PRB KPRO ecu (used)
and i got a BASE rsx with bolts ons and PRB intake manifold
i got the car to start but it turns off after 2 seconds
anyone got an idea what it can be?

ohk i erased the ecu and i got the car running
but it runs like shit :/
it wont rev past 3k and it slowly runs ...