I'm going to go ahead and assume since my Brenspeed tune has my rear o2's turned off, I can insert a wideband o2 sensor in there. I'll just disconnected one side's o2 sensor at the harness and keep it in a safe place.

Thanks,
Brandon

 

Those are after the CAT's , I think you need the wideband before them , at least mine is ...

 

Your wideband sensor needs to be before the cats. However if you're running an offroad midpipe and the rear sensors are turned off, yes you can use one of those openings for your new sensor.

 

Ahhh yes, I forgot to include the most important part, I don't have cats. Therefore, that's why I was going to use one of my rear o2's (since they're turned off due to the lack of cats).

 

Excellent, you should be all set. Good deal man.