Wideband O2 Through REM

[Parei_doll_ia]

Is anyone using a wideband UEGO and sending the signal to the ECU through the REM? (Like Nick's video https://www.youtube.com/watch?v=YujtUYPJikA&ab_channel=NickInTimeFilms)

 

I'm considering it because there doesn't seem to be any replacement Renix O2 sensors that actually work anymore. (I got a NTK last year, but it's the exact same metal body sensor as the Bosch that doesn't perform well) I just bought an OMIX sensor from Quadratec hoping that it's old stock that has a ceramic body, but I'm returning it if it shows up as metal bodied. 

 

I'm getting a loop fault lean code on the REM at the 1st closed loop attempt and when I accelerate for an extended period. (not WOT, just normal driving) The ST climbs up to 255 and CL fails. LTFT is around 160. vO2 doesn't swing much, just sits at 2-2.5V. Ground seems good, and the sensor has 4.6 Ohms. I thought fixing the busted paper manifold gasket that the Pacesetter headers came with would help, but had no change. The only OEM sensor that I have pegs lean immediately and constantly. 

[Parei_doll_ia]

I guess I'm the only one then. I live right next to Summit Racing, so I went ahead and did it. It wasn't too hard, but also confusing in spots. With some emailing Nick back and forth a few times, I got it sorted out. I still have to clean up the wiring before I drive it, but it was swinging much better at idle. I'll probably make a writeup in a few days.

[cruiser54]

Sensor is supposed to have more resistance on the heater circuit. 8 to 13 ohms? 

[boxyjeep]

Very interested in this.  I just installed an ATK 4.6L stroker and have been trying to find the right size injectors with a frequent lean condition.  I wonder if a problematic O2 sensor could be the issue.

[Parei_doll_ia]

4 hours ago, cruiser54 said:

Sensor is supposed to have more resistance on the heater circuit. 8 to 13 ohms? 

That was the heater circuit on the sensor that had 5 Ohms actually. Gray to black is open loop. The new sensor is heated through the AFR gauge circuit so it doesn't really matter anymore. After a few drives, my LTFT hasn't budged from 126 which is perfect 

3 hours ago, SoCalJeepComanche said:

Very interested in this.  I just installed an ATK 4.6L stroker and have been trying to find the right size injectors with a frequent lean condition.  I wonder if a problematic O2 sensor could be the issue.

I think doing a stroker is why Nick did the work on this. Mine is completely stock apart from the headers and 746 injectors but it's been running great so far. I think the UEGO in the AEM gauge is the same Bosch sensor as the o2 sensors on my mk6 TDI.