Question number one for everyone. If you are running a RAMAir it would make sense that you need to open up the exhaust also to let the engine breath properly?
Mileage is how you ride as much as anything. When I got the bike last year and was babying it the first 500 miles around town and short rides I was easily in the low 20s mpg (US). After the first oil change I was getting in the mid 30s and on long haul interstate I was up to 42 mpg.
I put TORS on late in the year and loaded a Hanso tune that focused on performance and had low to mid 30s mpg.
Then I started reading this dang site and got a bit of the performance bug.
I got a Ramair over the winter and a new crossover from
@Paul Bryant that I will install with the TORS. I am sure I will play with a couple different tunes and if I can keep the mpg around 30 I will be happy.
I agree with others you need to check the mileage the old fashion way to see how accurate your gizmo is.