Quote:
Originally Posted by Fat Charlie
Check it over time. The manual wants you to roll against mile markers and says the more (and the straighter) the merrier. It mentions 3 miles. Riiiight. If I'm calculating the mileage with my odometer, I'm going to calibrate the UG to the odometer. The current calibration used a little over half a tank. A little over a half a tank later, the UG is reporting 0.5 miles and 1.5 mpg more than the car. I'll refine it over the next few tanks and then I'll be really happy with it.
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No, no. Calibrate your UG distance and odometer against a GPS. I've done it over 40, 60, 80, and 100 mile distances with three different sizes of tires on my xB. The OEM tires were off 3.3%, set A were off 9.9%, and set C were off 9%. When I'd driven 10 miles per the odometer on the OEM tires, I'd actually traveled 10.33 miles per the GPS. When I'd driven 10 miles per the odometer on the A set of tires, I'd actually traveled 10.99 miles per the GPS. The UG will show you whatever you tell it to show you, based on the distance calibration you set in your vehicle setup option.
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Darrell
Boycotting Exxon since 1989, BP since 2010
Have you ever noticed that anybody driving slower than you is an idiot, and anyone going faster than you is a maniac? George Carlin
Mean Green Toaster Machine
49.5 mpg avg over 53,000 miles. 176% of '08 EPA
Best flat drive 94.5 mpg for 10.1 mi
Longest tank 1033 km (642 mi) on 10.56 gal = 60.8 mpg
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