i dont get it though, your friend has the air box with a k&n, stocks drilled out, and 150's are perfect. I have no airbox with k&n streetboogie kit and shorter pipes, and the 150's arent working for me...is this because of the mixture screw settings you think?
i have a bunch of jets that came with the bike, i just never read what sizes i have and all that...but what do you think try 140, then 130 and work my way down?
