I have a pr3 ecu and have two o2 sensors. My question is where the wires go to the ecu for the o2 which o2 wire goes to c8? Do I just add the second o2 to c8 and leave the stock o2 wire in c16? Or does the new o2 go to c16 and move the stock wire to c8? Sorry for being so cumfusing.
thanks
Matt