Car Model: 2005 Subaru Impreza WRX Manual w/ 18G turbo, 565cc injectors, walbro fuel pump, full 3" exhaust, Perrin CAI, STi Top Mount Intercooler.
Mileage: 69,000
Gallons: 11.2
Miles: 374
MPG: 28 mpg average based on Cobb AccessPort Reading
EPA est. MPG: 25mpg highway
% improved: 12%
Conclusion: On the trip I took to Orlando and back, this is the reading I got, plus a few miles around town here in New Port Richey. I think a 12% increase over stock is huge considering the car has an upgraded TD05H-18G turbo, 565cc injectors, walbro 255lph fuel pump, and running 300 AWHP, which is way more than the 187 AWHP stock, and having all-wheel drive. I personally would like to thank Cobb Tuning for making a great product with the AccessPort, and would tell anyone that fuel mileage and performance is all in the tuning.