I'm not in front of my laptop with MPScan.
But, you'll want to be sure you have the latest updates and version of MPScan.

If you are using WB2NB, then the ECU should be able to receive the wideband output 0-5v directly to the ECU, and MPScan should be able to log the AFR_o2 and display in Air Fuel Ratio. This is handy to tune your calibration as described in that tuning Wiki.
You may also log your O2 volts, but this is not a value used to import for that tuning line on the Pumping efficiency curve.

Add a gauge to your layout, and then save the updated layout.
You'll need to update the Profile file, and reselect the layout file you updated.

If you have special ranges to your Wideband AFR, then you'll want to be sure those are properly setup in the MPScan RAM Locations file. This shows the Display Range and the ECU Min/Max values.

If you make changes to a RAM Location, and have that as one of your layout gauges, you will need to delete it from your layout and then recreate a new gauge for it (to get the updated settings).


So, it does sound a bit confusing. Morris had some YouTube videos about setting up some of this. But it sounds like you are close.

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