spotscivic

so i plug'd in my new ecu and it has crome pro on it and now my 02 sensor gauge is not reading anything could disabling it on the program cause it totally not to work? and my other ? is if i get a wideband 02 sensor and hook it up running the power and the ground and the signal wire off it straight to my 02 sensor and totally bypass the ecu will my non wideband 02 work as a wideband with the right sensor hookd up?