This is not going to be a perfect test. I fill up at the same station, same pump, and let it click once, and then gently fill to a second click, and then run with it. This is not laboratory science accurate, nor do I really want to be that particular. I supposed I could have gallons of gas at home and fill until the gas is right at the brim of the filler neck, if I really wanted to be that anal, but I am rightfully surprised I was attentive enough to get a book to keep track, let alone go to OC details.
The spirit of the experiment is to:
baseline
make changes, with goal of bettering the tune, and efficiency
report (successes and failures)
This is a report on my vehicle, with my driving, on my communte, and there are many factors that might influence this, yet the spirit if the exercise is fairly consistant.