Switching wideband from front o2 to downpipe

[nathansgsx]

Currently I have my wideband in the Front O2 location simulating narrowband. My new downpipe has an O2 bung welded in and i’d much prefer to have the wideband there. Thankfully I kept the plug for the stock o2 intact and just disconnected incase this opportunity came. My only question is right now the front o2 wiring to the ecu is cut and taped off and the widebands yellow wire is soldered there, if I want to run the LC2 in the downpipe which wire/pin should I change it to so I can keep it logged?

 

[perrytheplatypus157]

There should be a white wire right next to the spot where the wideband is currently in the ecu. That's your rear O2. Pin 75. http://www.dsmlink.com/images/forums/2GECUPinout.pdf
If you're not looking to use the front O2 sensor, it may be beneficial to swap the pins in the ecu plug so you don't have to solder in the car.

 

[steve]

Are you planning on reinstalling a narrowband O2 sensor? If not, why would you change the LC2 wiring? You still need it to simulate the NB, right?