Speedo question

You write what you clocked them at. I was never big on being a tail light chaser and writing speeding tickets, but I never had anyone admit to going faster than I clocked them at anyway.
 
Before correcting my speedo with tuneboy, my speedo was off, but my odometer was pretty accurate. [Checked with a gps, and by watching mile markers.] Now my speedo is right, but my odometer is off. Seems to be 7 percent slow.
 

There is a company that makes a "speedo healer" for a great many bikes out there. Installation is simple, at least it was on the FZ1, but programming it the first time was a little time consuming.