My friend swaped a obd0 b16 motor into his 91 dx hatch. He wired the motor up with directions off the internet for duel port to multi port injection, but it doesnt start. The fuel pump will not turn on with ignition. We checked the main relay, and all of the grounds. I am running out of ideas. The ecu throws the zero code in his car, but when we checked it in crx with a b16 it worked fine. What could be other reasons that the pump will not turn on. The fuel pump was working before he did the swap, so i dont think the pump is bad. thanks for your help.