Is the p2t obd2b? like could i just mate it up with a obd2b engine harness and have it work fine and no reflashing or nothing, just plug and play? I guess im just not seeing how the ecu from a civic si will work fine with a B18C, i mean the ecu is made for a totally different engine? But then again ecus have a lot of the same codes and programs right from engine to engine? So ill probably either run a manual civic si 99-00 engine harness and ecu or a manual gsr 99-01 engine harness and ecu, best bet for now i guess. Thanks for the help.