Interesting figures! I haven't checked the speedo over a wide range against my GPS to see if it's linear but at the NZ legal open road speed limit of 100 km/hr, it pretty much matches your data, showing 105-106 km/hr. My GSX-S 1000 showed 108 km/hr. I haven't checked accuracy of the fuel consumption figures. From the "fuel remaining" readout, it indicates that I should be able to get close to 300 km (minus 5%!) But I'm not game to push my luck.
I'm heading out today for a couple of hours. Might try and collect some decent data.
I'm heading out today for a couple of hours. Might try and collect some decent data.