IIRC 52 mpg at around 16,000 feet on my bike, 16-42, 2 into 1, stock map. Tahoacer gets around 52 mpg at 6000' with his custom map. That would be pretty nice. According to him the F/A ratio is way too rich in the mid revs with the stock map, and curiously gets too lean at WOT. Maybe something to do with Euro emission standards, not sure though.