Good to know it is possible on the non ethanol 89, is what I have down here.
On my old Tenni GRiSO that Pete bought, I was getting 300km /186miles per tank pretty regularly with a flatty version of Mark's map.
My new GRiSO here gets 35mpg if I am lucky but hasn't been ridden as much, I figured it was the 89 fuel and the fact it is still so new.
How useful is the snorkel removal? Will the thermostat install help too?