Originally Posted by reneg
Yikes, RTFM. Guess I'll have to check that out. Thank you.
That being said 1% isn't that far off. I calibrated mine with a handheld GPS... got on the freeway and set the cruise to 60MPH indicated by the GPS and made my adjustment on the Scanguage. Mines pretty close, but it might be still 1% off. 1% is pretty darn good..