Predator U7140 R28 Rear o2 question

[speedracer]

Hi,
I have a U7140 R28 for a 2006 Mustang GT Auto. I am trying to turn back on the rear o2 sensors since I am needing to smog and with them turned off it wont pass(running a custom Bama tune). Under the OBD2 menu, which option is it to turn them back on? There are 3 choices but none of them just say rear o2. Thanks for any help. I did a search, but nothing came up.

[mikel]

you should turn them all back on, but you may need to contact bama to have the tune redone to pass...