Right now my ecu is odb2 going to a p2p ecu. There is no vtec plugs etc. I bid on a p2p ecu(correct ecu for the d16z6) and was told to get a new wiring harness. From viewing pictures of the engine wiring harness I dont see that it plugs directly into the ecu. Is there another harness that goes from the engine to the ecu that I should be aware of? Do I also have to change the interior harness?