The first one started near the top of Donner Summit in the Sierras, so there was a 3000 ft. net elevation loss on the tank.
But the next tank ended at the same gas station it started at, so this one is "honest". Finally completed my warm air intake (now that it's summer, right?), so the last third of the tank was with warm intake air. It seems to keep it in the 100-110 degree range most of the time, but hit 140 climbing the hill out of Carson City earlier today - the hottest I've seen so far.
I also added a cardboard "mock-up" air dam and tested that. A couple milestones were reached there, too. In three sets of two-way tests at 55 mph, I finally got an average of 55+ mpg for the first time.
And at 40 mph, I was able to achieve an average of 70 mpg in two sets of two-way runs. This is the highest speed I've been able to register 70 in controlled, two-way testing. I credit it to the combination of the warm air intake and the air dam.
> see thumbnails: Hot air intake & cardboard air dam <
