Best possible mileage?

Funny thing was, I did not build it for economy, but performance.
Dig. I built this for a little more zip and expected an increase in fuel efficiency, but didn't expect a 50% increase!

It currently doesn't start with one bump of the key when it's half warm to cool anymore. It takes a little throttle to get it to ignite. We'll see where it goes from here. It still has a points ignition and stock coil.