I had an O/R X-pipe install like two days ago with no MIL Eliminators. I have not used my tuner to turn off the rear O2's and i didn't get a CEL. I don't think this is normal? Since i added the X-pipe the car is running what smells like rich "I have no Wideband". when i get out i can smell the Exhaust on my clothes. Maybe my Check Engine Light is gone? Other then that Car the pulls hard a very noticable difference added the Power Pipe and X.

 

Weird you didn't get a CEL.Is the rears already turned off via the tuner.Usually the guy that does the tuning will automatically have it set off in the program of the tuner device,or chip.........and get use to the smell on your clothes,quite normal with a off road mid pipe.LOL!