Narrow band emulation

[5ft24]

I have a PLX A/F gauge with a narrow-band emulation output.
I don't really have any room for an additional bung in front of the cats on either side.
I want to use the narrow-band output to feed the ECM.
It appears, from the wiring, that it is a differential signal feeding from the sensor to the ECM...
Is it possible to do this?

car is a 2006 Pontiac GTO LS2 E40 ECM
Thanks

[camaro1]

I have done that on several cars and it worked fine

[5ft24]

so do I just ground the other O2 sensor signal wire?
just don't want to smoke anything

[camaro1]

narrow band output from plx to the purple wire, just leave the rest disconnected and turn off all the o2 heater dtc's for that sensor

[5ft24]

narrow band output from plx to the purple wire, just leave the rest disconnected and turn off all the o2 heater dtc's for that sensor

My concern is my wiring diagram for the ECM shows both inputs isolated. I've circled Bank 2 sensor 1. connecting only to the high side sensor input I get no reading on the ECM. I am just not sure if the low side can be connected to ground, and I didn't want to just try it and blow something if it isn't supposed to be.

HO2S.jpg

[camaro1]

I really cant remember if I grounded the low side or not,, try it, it is just a ground inside the ecm so your not going to hurt anything

[5ft24]

cool. I'll give that a shot when I do the complete install Sunday.
Thanks