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How accurate is the stock tach?

Old 10-08-2007, 08:28 PM
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How accurate is the stock tach?

I'm reading reports of the speedo being out by 10%, so i'm going to check mine with my Garmin Zumo 550 gps unit.

Makes me wonder about the stock tachometer. Anyone compared it to a dyno or aftermarket tach? How (bad?) is it?

Let me know.

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Old 10-09-2007, 12:41 PM
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tach is usually dead on... speedos are what u need to worry about.
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Old 10-09-2007, 03:17 PM
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They are usually a few hundred rpm off at the top if you base it on readings from the dyno. Even my 1000RR is off if compared to the Power Commander software.
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