Digi Dash Calibrating

[Johnnybizzle]

Hi guys,

Trying to calibrate my KOSO digi dash, tried different amounts of magnets, thought 3 magnets on the sprocket adaptor flange would be right, but i went for a drive with the sat nav and its double what the sat nav reads, tried 2 then 1 magnet but still the same reading, have i got to do a bit of reading in the instructions to set it up?

what do u guys think??

regards Jon