The image above is a bit misleading. I warmed the car up for a few minutes while scraping ice and only then started the timer, and I snapped that pic at the bottom of a small hill about 7 miles into my drive - it was the peak fuel economy. However, I did manage to keep the average over 60mpg @ 55mph for the 20 miles of highway commute I have.
I think the low hanging fruit right now are getting all of my underbody panels back on, and in finding the right ignition timing for the 50-70% load area on the map - where I typically am when climbing hills. It may be close there but I'm not 100% certain. Oh, and for winter to end. This was in sub-freezing weather with wet to slushy roads.
Thinking about making a post on engine geometry and timing in the next few days, just to share my thoughts.