So, I finally got my o2 sensor for the vx, and decided to take a trip to pick up a few parts so I could see what type of mileage it would get. The trip was 90% hwy at 65-70 mph most of the time. I hooked up my voltmeter so that I could monitor lean burn and took off. I didn't use any special driving habits except for keeping it in lean burn for almost the entire trip (probably only kicked out for 3 total miles).
I figured with us still having winter gas, and me not employing and driving changes other than slowing down a tiny bit I would probably end up at around 45mpg, boy was I wrong. I just filled up and the end result is... 53.44 mpg
I drove 398 miles and it took 7.447 gallons to fill up. I filled up before I took off and filled the tank to where I could see the fuel in the neck (to the top), and filled it to the same spot when I re-fueled.
I know I have to take an average to see where I really am mpg wise, but I am pretty impressed at this mpg.
Just thought I would let you know