Thread: Speedo calibration for tire size change
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Old 09-17-2010, 03:48 PM   #2 (permalink)
gone-ot
...beats walking...
 
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...don't believe it's possible to "re-calibrate" the factory ECU.

...only under 'secondary' calibration--such as via SGII, etc.--can this be accomplished, but those results are not reflected on the instrument panel odometer or speedometer.
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