About 24 mpg or so in the Civic. That's beating the hell out of it a good bit, and running E85. WOT you can damn near watch the gauge drop LOL. 1000cc injectors at 100+% duty cycle and a maxed the fuck out Walbro 255 FTL. Ready to drop in the Bosch 044 in-line and 2000cc injectors. Fuck MPG, it cost me around $16-$18 to fill the tank with 110 octane.