Gen1 poor fuel consumption?

[fireblake]

My bike has a full Monty and an after market can. I tend to ride on the motorway in the high 90's and keep near the limits in 30 and 40 limits and get regular 50 mpg's, I seldom go over 9000 revs but like to get up to fast motorway speeds quickly. I haven't been out with mates for ages so can't give you any mpg's for real thrashes. Your fuel economy sounds really poor from what I can see. Is your air filter clean as a dirty blocked one can knock your mpg for 6?