Hi all,

I'm trying to learn a bit more about the factors that affect fuel mileage. I've done a lot of searching and reading, and it seems there are lots of opinions out there. There are also a lot of posts to the tune of "it depends" without deeper explanations of the factors.

Some of the dependencies of fuel mileage as I understand are listed below, any corrections, opinions, or additional information would be appreciated. I'm trying to get this straight in my head.....

tune - can't be fat
driver - a smooth finger is preferred, any other tips out there to drive for max mileage?
track conditions - loose = less runtime, high traction = more runtime?
track design - long straights = less runtime, tight and tech = more runtime
plug - hotter = ?, colder = ? or is this an equation of having the "right" plug for the engine
humidity - ?
ambient temperature - ?
fuel - I'm hearing 25% is the best mix for runtime?
carb restrictor - smaller = less air/less fuel/more runtime, larger = more air, more fuel, less runtime
clutch - is a later or early engagement better for runtime?
epa - I've read that reducing EPA is a bad practice since it changes the tune
flywheel - I've seen a lot of steel flywheels being used these days to soften bottom, does this have an impact on runtime?

Thanks!