19-09-14, 08:30 PM
Mine does this although I only noticed after 250 mile trip to the in-laws. Error was about 3% not the 7% like yours which sounds quite a margin. I put it down to an old bike, old wiring, old ECU, old speed sensor - on my 2000 FZS. Doesnt bother me really, I mean we're talking about 7.5 miles out of 250. My daily commute is 26 miles round trip so that 0.78 miles error. Not worth bothering with - for me.
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