Narrowband or Wideband output to ECU (2 O2 sensors or 1?)

[S14DB]

I have a Power FC and a PLX R500. I don't know if I want to send the narrow band output from the R500 to the Power FC or run a stock narrow band O2 in the stock location and the wide band down stream.

Thoughts?

[UNISA JECS]

The output to the ECU should be kept narrow band usually your wide band controller has 2 outputs for this reason, one that can mimik NB and one for WB signal. The wideband should be placed where its recommended, somewhere your wideband documentation should suggest a spot, but rule of thumb is they generally are placed further downstream than that of teh stock o2 NB placement.

[S14DB]

And that's why I don't know if I want to run the ouput from the wideband or the stock o2 sensor to the Power FC. I think the stock sensor would be better than emulation.

[smelly240]

yeah - although almost all stock o2's give off a 0-1v signal - different values within that scale have varying afr's for different vehicles (if that makes sense) - so it can be different between the stock sensor and the emulated wb sensor so u have to set that up for the output. I did it with my innovate and it acted stupid so i went back tothe normal nb.