I know this is an old thread but thought I would revive it as I am in the middle of trying to tune up my 04 Brutale 750. My red light cam on at about 90miles. I filled up at 100.4miles with 18.03Lt giving 25.31mpg.
I think this can be improved with some fettling. Having been in discussions [email protected] raptor, who has been brilliant with helping me out, I intend to have a look at the CO pot in the ECU and see what I can achieve.