I got 56MPG after a tank on my usual commuting route doing "normal" driving (no FAS, DWL, low RPM slow accellerations) and normal speeds (70 to 80MPH on the interstate, 55 to 65MPH on rural roads). Since traffic speeds are higher than they were 4 years ago the last time I drove in this manner, the mileage I got then (51MPG, summer, 44MPG winter) on this route isn't directly comparible to this tank. But on summer interstate trips at the time when I was doing mid-70's mph, I would get 44 to 46MPG. So the aero mods seem to be good for a little over 10MPG, the rest of the mileage improvement being driving technique.
On a lighter note, a groundhog did a kamikaze run under my front tire and knocked off one of my back wheel spoilers, which I have since replaced.
Krousdb, in the summer, my car's temp gauge reaches normal levels after less than 2 miles of driving, although I can stretch it out to 4 miles on flattish routes where I can go a lot of FAS'ing. In the winter make that 3 and 6 miles.
This new tank (started friday morning) is going to be an interesting one, I think. I've shifted my habits around to give the car a break from all of the codfishing (loads of bump starts, loads of key starts...has to wear things down over time). So far I've noticed a ~7% reduction in highway FE and a 7-11% reduction on the commuting route according to the ScanGauge.
The interesting part comes when I do a hand calc, probably sometime next weekend. What I'm doing is trading some degree of extra fuel injection during key starting (not registered by the ScanGauge) for some degree of fuel cutoff when I coast to a stop in gear (also not registered by the scangauge, which insists that I'm always buring fuel at a rate of 0.3gph.) In a way this is part of my investigation into frequent key starting vs. fuel consumption, so I'll have to repeat the same techniques for at least one more tank to make sure that my results aren't solely due to fuel pump error. Hope I can keep it over 40!
I had some good numbers today! From my shop to my wife's work this afternoon, the SG2 was reading 52.7 mpg after 9.1 miles. Average speed was 44 and max was 62. Then, on the way home from registering my daughter for school, I was showing 54.8 after 4.6 miles with an average speed of 34 and a max of 50. So far today, after 41.9 miles, I'm at 49.2mpg with an average speed of 36 and a max of 62. Go plastic car go!
Horsepower is how hard you hit the wall, torque is how much of the wall you take with you.