Ok i have auto tap and i lookin at my reading and i have only my front o2 sensors now, and they are BOTH reading at 800-900 mV, and it usually stays in the same area, always constantly up there never going down.

do i have bad O2s or am i seriously running rich, i had it tuned my PCMFORLESS nad i am gogin to send it back there once i get it datalogged with the o2 readings, spark advance, tps, long term fuel trim,knock retard and maf rate. Any one know if it is tuning ot o2s, please help, plus it says i have low activity on my rear sensors, i dont have them pluged in but they read 450, i dont know if they were deleted but if not they will be.