I am thinking about buying am AEM wideband, guage type. I am building an engine this summer and having this gauge for tuning and driving purposes will be beneficial. I already have a chipped ecu and will be getting it retuned after the new engine is built. My question is...since I don't have an aftermarket ems, can I use this wideband as my O2 sensor? or can I run it in conjunction with my stock O2 sensor? and what are the pro's and con's of both?

Thanks IA!