I'm gonna be away from my car for a while, and I won't be able to make any advancements for a couple weeks.
I did get a chance to fiddle around today. Speed and distance is pretty spot on at around 40-50 mph, but it gets worse at lower speeds. At 20 it will think you're doing 28. So I'm not quite sure what to make of that.
Fuel efficiency I couldn't get going though. Instant was always reading 99999, or 0 (stopped)
current climbed, starting at around 11 which was already wrong, but it continued to climb as I drove, after about 8 minutes it thought I was doing 800 mpg
I assume it's simply because my injector rate was way off. I kept cutting it down, first in half, then by 5.5, then by 100, but I never escaped the all 9's. More time is needed.