Originally Posted by strokin_early_99
If that is using the overhead display to calculate mileage, it gets messed up with tuners and does not read accurate. Hand calculate it and you will firgure it out real quick 25-27mpg is not in any way accurate.
Just installed it last week so I am not sure if that will hold for the long term. We are currently do a full tank of gas test to see were we end up. I agree that display reads high (has shown 40mpg on freeway with Evo2) but tank had been close to full when we installed it and got 210 miles for 8.1 gals. My wife could not believe it and made me use a gps to see if the evo2 had change the speed or mileage tracking (gps vs car within 1%). Please not my driveing habits are very much freeway (75%+) and I use the cruise control as much as I can, only doing 60mph or so. I like the Evo2 because it is a simple system to install, has what I needed (gauges and tuner) and seems to works as advertised. I totally agree other individuals may want more options and going with another system maybe the way to go.