Interesting graphs darrsi. Are both lines with the the aftermarket pipes, end can and K & N fitted? The difference being due entirely to cleaning and adjustment of the carbs?
Actually now you've said that, this graph was when i had a normal air filter in it, which would've been an ill fitting Hi-Flo type..
I've had it dyno'd since this one with the K&N in, but he never gave me a print out, and i forgot to ask for one.
He did say to me that the K&N doesn't make too much difference BHP wise on Fazers that he's ever seen, whereas he said they do make a big difference to a Bandit for example, even though the bike blatantly feels better when riding with one fitted.