MCMfan,
. . . . I would like to put my Mirage on a dyno. I could then calibrate my ScanGauge to read the correct HP. When I first installed it it was reading the power output as over 100 hp even though the manual says about 80 hp. I believe that the manual is conservative and the ScanGauge reads high. I have driven a lot of cars from under powered Chevy shove its to 700 hp super cars. I have found that my rear end is reasonably good at measuring hp. LOL! The fuel mileage loss during cold weather applies to all cars.
GOD Bless and Thanks,
rich!