I did mention to John that very thing but that I doubt if they were lazy it would make much difference. Really from what I have witnessed the 01-05s just don't get the economy the later ones do but they do seem to have a little more pep.John,
Are your O2 sensors old. If they get old and lazy that will affect fuel mileage. Most cars have crosscounts but I don't think that info is available on your bikes. The more times O2 sensor voltage passes back and forth over perfect the better the fuel mileage. I know there are other possibilities but this is common for old sensors.