fuel consumption (one for the phd's and pe's)

[Mike Reaves]

This should start a good thread. I have this bike (say a KLR) that burns 1 gal of per hour (gph) at 50mph. Lets also say for arguments sake that it takes 10hp to maintain a steady speed of 50mph. Way is it when I change to a larger jet in the carb the milage goes down? Now know the typical Harley tuner says "because your burning more fuel", duuhhh... But if I still require 10hp to do 50mph then the burn rate should stay the same. If I'm burning more fuel then I'm making more hp and I need to back off (reduce throttle opening) to maintain 50mph. Of course I know that the bike is now more fun to ride hard and I have the 'normal' reaction to twist even harder but if I'm just cruzin down the 'slab then burn rate should be the same. right??