Norm Peterson
corner barstool sitter
Nice. all there seems to be over here (northeast USA) are "your speed is xx" radar displays in places, that you can't be sure how well they were calibrated.They have speedo accuracy tests on highways in Australia. I know that my speedo reads 4km/h above actual speed at 100km/h.
All that does is take the inaccuracies in the speedometer head (stepper motor?) away. That still leaves a few error sources, which may or may not be as large as the parallax errors possible with the needle on a mechanical speedometer.If it plugs straight into the OBDII port, Should be more accurate
Norm
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