Odd fuel economy yesterday. 2008 1200C, V&H slip on's , stage 1 breather and download. Dont ride 2 up very often but yesterday we all took the girls with us. did a 227 mile day. Orlando to Flagler pier and a few places in between. Some highway, some country rodes and some city. Max speed 70 most 50-60 range and some slower. Wife doesnt add that much mass or weight. 5'4"x115 lbs. Anyhow filled up at 127 miles and only took on 2.25 gallons. THats 56mpg. You know I get about the same or less riding solo on strait highway at 60-65max. I cant figure why the increase in economy. I filled up with Shell 93 which is what I have been trying to stay with. Only thing I did different was add 2-3oz of MMO to the gas. Bike has 10k miles on it so doubt the injectors were dirty but added the MMO just the same. I also just completed the 10k service and inspected the plugs and they were clean. Fresh 20/50 synthetic and 20/50 in the trans/primary . So with that I cant explain the increase in economy.