I had the UEGO downloaded manual and lost it when I reinstalled windows on my laptop and naturally can't find it on the web now.

How do I connect my AEM UEGO controller + gauge to my AEM EMS for data logging?

If I remember right, I tap into one of the ECU wires going to the EMS but I can't recall off hand which one. I also need an O2 sensor calibration table for a s2k if anyone has that off hand?


If I just plug the UEGO in for data logging purposes, my tune should not be tampered with correct? I know the AEM EMS has a function to let it tune itself based on UEGO input and a set number you program it for. (this might be something I'll look into eventually as it might fix the whole ambient temps effecting your tune issue).


Thanks,
Jonathan

 

Just wired mine last week
Hopefully Minitoyota chimes in he has the wiring diagram i used.

Marcus

 

Yeah, I just bought one...you want to connect the white output from the UEGO to Pin #C16 or A23 on the EMS. That should do it. The blue output wire from the UEGO is (as I understand it from the directions) for use with other loggers.

 

How do you identify which pin is C16/A23?

 

white wire on uego to o2 sensor wire on harness.....

 

Use Pin C16, its on the blue OEM male plug, center row, 5th or 6th one in. All white wire. I think there's a pic in this how to. https://www.s2ki.com/forums/index.php?showtopic=175549

You can download the calibration table off the aem forums

 

^^^ Perfect link, thanks!