I've noticed that my mileage per tank has been slowly increasing as I break in the car. right now I have 850 on the clock and I get ~220 miles out of a tank. I notice that turning on the AC kills fuel effeciency.

Supposedly an ECU flash can help. Anybody able to comment? Just a stock EVO w/ a flash or piggy back?

 

Yeah well my mpg at the track was 4.....as far as me getting an average of 16 mpg in the city and like 20 maybe on the highways.....its normal driving. not "racing"

 

My car is an '03. After the XEDE and mods, I can get 300 miles on the highway, no problem. Highway mileage when driving sanely is about 27mpg. I average 22-23mpg in my daily mixed-city driving.

Before fuel management and any mods, I had to fight for 22mpg on the highway.