if I were to buy a wideband o2 sensor, do I still keep my stock one? I know I would weld in a new bung but I was wondering do I run the wideband signal to the ecu or if the wideband is strictly for the gauge? Im just wondering because my o2 sensor went out and if I could upgrade to wideband then I would but if I still need a narraowband I will just get that...