I'm installing my realtime ecu for the first time on my b13. I'm not sure what's the first thing i have to do.
help please.

Follow the Quick Start Guide. Have you got a base program?

http://www.sr20forum.com/calumsult/189834-realtime-ecu-quick-start-manual.html

i'm not sure what i have. I send it to Eric from CT and he send it to you. I told him exactly what i was running and he then send it to you.