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I calibrated the setting for distance and speed, using mileposts on a 50 mile straight stretch. Fit is an '09 Sport AT with Dunlops and about 3,000 miles wear.
A calibration factor of +2% achieved distance accuracy of under 0.2%, while my Garmin 76CSx and external antenna came in high by 0.14 percent. My factory trip meter came in low by 1.4 percent.
For the fuel use adjustment, I may try to run three of four tankfuls for a single calibration factor to minimize the effect of some of the variables. It will still probably need to be adjusted seasonally for varying intake air temps and manifold pressure.
Last edited by CBX; 11-22-2008 at 01:03 AM.
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