Originally posted by morbo2000
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Accord Euro speedo is very accurate, only a smidgen off, but imo the perfect speedo is that on my GSXR600 - huge, fast updating numbers. Not quite getting that, small numbers will do.

The really cool thing is that the SG will report back what the ECU says, and then let you modify it up and down in tiny % increments. My Honda's ECU was almost perfect, however I added 1 or 2% as it'd make it round up rather than down. I.e. I don't want to be done doing 53.9 in a 50 zone - I'd rather it show 54 than 53. So you need a GPS with accurate speed output to calibrate this; my Garmin 2610 shows me e.g. 53.9 so that's perfect.
I'll create a new thread and report back once I get it into the pug, so as not to derail this one too much.
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