Are you aware that you have to enter in a corrective adjustment which you can do at every gas fillup? I think the scangage takes a reading of volume of gas being used per time period, but without the adjustment it can be off by quite a bit. I wish the documentation were a little thicker about this part.fklentz said:I hooked my scangage up in my insight and found that it reads temps and rpm's ok but it can't accuratly read the MPG functions, totally lost fuel consumption. I don't have any MIL codes to read yet.
On my initial setting I had engine size at 1 liter, and put in a +25% correction on tank fill-up. I think that I maybe sharing your exercise in fultility. I have since changed engine size to .8 liter as suggested, and I am continuing the calibration.I found that setting the engine size to .8 liters on my ScangageII gives me an amazingly accurate instant mileage reading. However... using the tank fill-up was an excersice in futility, and threw everything else off