Well here's proof if proof were really needed, prior to my recent flash by Simon my best mpg reading was 58.8-mpg and that was up around 3-mpg on the 55-mpg I use to get prior to my own mods ie std modified exhaust system, k&n air filter and the CO set to position 14 on each cylinder.
So I did around 150miles today covering A-roads, B-roads and some dual carridgeway riding, and I wasn't exactly hanging around. Checked the reading upon arriving back home, could hardly believe what I saw now up to 63-mpg, wow that's a big improvement of over 4 mpg. So I'm delighted to say the least, especially seeing how the current rate fuel is going up day by day.