If you mean that you want to connect an aftermarket wideband to rear o2, then you can do that.
Check what the pinout is for lambda signal, it will be unpopulated in the connector, you can just put the wire there directly.
The ECU inside has all of this connected and you can log the variables.
Hey mate, thanks for the response.
I have got it all up and running, I'm running a 3bar map sensor, is there an expression I need to add?