What happens when installing 220 mph faceplates on 186 mph Hayabusa gauges?

The 220 mph faceplates use a different scale than the 186 gauges. This is because it needs to cram the extra range into the available space.  the gauge cluster has no idea the faceplates were changed and assumes that point A (we'll use the max speed of 186 as an example) is 186. When a 220 faceplate is installed, point A is no longer 186, but it is now 210. This is an equal percentage throughout the arc of the speedometer. The difference is a linear +13%. The table below assumes a 220mph faceplate is installed on a 186 mph gauge.

This can easily be fixed with a speedometer calibrator such as the Yellow Box that we offer on this site. BUT, this is very important, the speedometer and odometer work off of the exact same signal from the speed sensor and is independently calculated on the circuit board inside the gauge cluster to come up with the mileage traveled. When the signal is turned back by 13% to correct for the difference in the faceplates, the odometer then will read 13% too low.