Yeah, this is right where mine's at too.

 

They probably could. With the ThunderMax you replace the ECU with a ThunderMax ECU. The speedo is an algorithm created in the ECU, so the ThunderMax program simply compares your actual speed to your indicated speed. It then gives you a new number to enter into the algorithm to correct the error. I assume Power Vision does the same for the stock ECU. For the dealership I'm sure it's a lawyer thing.

 

Also the cruise and the 6th gear light works with this algorithm. The bikes computer looks at engine RPM and bike speed. If it matches a preset table then it tells the 6 gear light to come on. Also if it is off to much then it might not let the cruise stay on as well. If you want to test it go down the highway in 6th gear pull in the clutch and raise or lower the rpm by 500 or so and the 6th gear light will go out. Match the speed and the rpm to what it would be with the clutch out and the light comes on. It is all programmed in the electronic brain.

The wife's trike has had the pulley change to match the the new gear ratios that are on the 2011 and up. She has the electronic box that fools the spedo to correct the MPH but her 6th gear light never comes on. The cruise works so I left it alone.