Looks like something went off the rails in the past twelve months. I found a log from almost exactly a year ago (July 12, 2020) where I was checking on the function of the EGR as it might relate to the bogging issue I was having (turned out to be bad coil). Nice, clean data trace along with a good oxygen sensor signal. At least narrowing down the time frame where something might be amiss. I might need to start doing more regular logs!

July 2020 Screenshot.jpg
July 2021 Screenshot.jpg