ok.. late late reply
I get an average of 400-500(tops) on a tank around Auckland, which can be quite hilly in places. I drive it like its a turbo car.
On the economy meter thing I get around 7-8Km/l around town and long distance (can't recall but) 12Km/l
So again from my top post, what I can do/replace to get some economy (and power) back. I got flash/tune until my Mechanical Warranty is up next July.