Black and grey keys

I’ve had my 13′ outlander 800 since it was new but due to work etc. I only have 15hrs or so on it. Anyway, I was out 2 wk’s ago and finally tested the top speed, which was about 47mph before the governor kicked in. I have always used the black key because that suppose to be the "100% power" one. So the other day I tried the grey key and holy cow! It seems the dealer programmed them wrong. I now really know what this thing can do!!