[Frank Lee]

Originally Posted by Petti the Yeti

Alright, I have a baseline of 15.1 MPG from my first tank. Filled 16.5 gallons at 249.2 miles, or something like that.

This was driving about as far from hypermiling as possible. Shifting at 4000+ RPM in each gear, speeding at 80+ MPH on the highway, cruising at around 3000 RPM through the city, running the AC on max, etc. In short, as aggressively, and economically careless as possible.

Anyone have some other tips, or ideas about the aerodynamic mods I wanted to do?

That's no baseline. That's called "stacking the deck".