I have @20 cold start cycles, (4) 15+ min 55mph drives, and over 400 miles of driving since I replaced the questionable battery last week. Torque app shows the car runs in closed loop after about 3 minutes of warm up time.
I played with the throttle some in the driveway and the bank2 post cat o2 sensor drops to and stays at around 1.8v and sometimes 4v-5v if i hold rpms steady at @1k.(bank1 post cat does not move from .7)
Do I need to take this into the dealer and have the ecu flashed? I've spent days searching online and no one else has ever had this issue of ALL monitors refusing to set.