Some of the hypermilers use manual calculations, others use the computers numbers.

My computer is off by about 3MPG optimistic. I hear the computer update makes the reading more accurate. The numbers I put in the database are hand calculated. I think there is a field now where you can see how people are putting in their numbers.

My hydroponics experiment

You ever notice how hard it is to lip read cartoon characters?
"Crazy is what the sane call Delta Flyer"