Proform 850 dialing it in closer

Can you post screen shots?
Should be some clue as to whether this is electric noise or EMI or internal.

Here's a log of mine with problems. This was with an LM1 and Auxbox.
But we can see several issues, and maybe a smarter person about these things could have narrowed down the cause.
Notice the rpm has blips all along.
All of the channels have visible noise except the MAP (Vacuum). That's interesting! That's the only one with no wires into the engine bay.

upload_2020-8-7_8-27-35.png

That's an old log - nothingfor us to spend time on here.
My only point is that your log may have clues.
I would like to think that channel that supplies 5 V to the sensors will have filtered out electric noise.
But I don't know if the power controller for the WBO2 sensor does anything that might result in filtering.

But my understanding of radio noise (EMI) would be picked up by any unshielded wiring - at least in the higher frequencies. Again this is not an area I know much about.