I need a PLX wideband refresher

[DA9's]

What's up guys? I have been away from the hobby for a bit and have recently started working on my car again. I am just finishing up a rewire and tuck and need to verify my PLX wideband wiring. The setup is an S300 P28. Let the dead horse beating begin!!!

Before the rewire the PLX was wired as follows;
Red- to ecu power.
Black- to ecu ground.
White- wired into D10
Grey- wasn't connected to anything 

Now I know all of that is correct but I would like to utilize the grey wire as well. If I am to do that I would wire the same as above but also add the grey to the D14?? I have read numerous threads but can't seem to get it straight. Is there a benefit to running closed loop off of the grey wire? It is my understanding that closed loop will provide the best driveability and gas mileage. My plan is to unplug my stock o2 sensor (which is downstream form the PLX sensor) and tap into the D14 at the non OBD-OBD1 jumper harness in order to get the signal into the ecu. Once that is done I assume I just switch to closed loop and the D14 input in the Smanager and run off of the PLX signal, going back to open loop and the white wire D10 input for tuning and datalogging? Or would I be better off just forgoing the grey wire all together and running closed loop off of the stock sensor? I hope this all makes sense. I feel like I am complicating things too much and hope someone will be kind enough to set me straight. Cheers,

-Ryan

[Spunkster]

The s300 can run in closed loop now from the wideband signal. There is no need to connect the narrow band signal.

http://www.hondata.com/techplxwiring.html

[DA9's]

Thank you. I have read so many different threads on the topic I was having a hard time keeping it all straight. I will just leave it wired as is and run it that way. My only other question would be, should I leave the stock o2 plugged in or should I unplug it? Will the ecu even look for the stock signal?

EDIT- Answered my own question. As long as I set the input to D10 I will be fine. Pardon my ignorance but I am just now learning the software side of things.