i have an obd 2 integra ls. I did a ls vtec swap with b16 head intake, gsr cams, b18b fully built block. stock ls injectors, fuel rail and throttle body. the car runs great with the ls ecu. once i plugged in the itr. it boggs down when i try to give it gas, it throws codes and then stalls on me. i even disconnected the 3 wires i added and it still does the same thing. do i need to wire in something else? plus just to make sure where does the vtec pressure, solenoid, and knock plug into on a obd 2.
help please

 

What codes does it throw on you..