air box mods ?

[nick crisp]

Cone type filters will require rejetting the carbs to match the increased airflow. On some bikes you can get away with just going up several sizes on the main jets, fine tuning might require raising the needles a notch or two etc. Dynojet kits come with all the necessary bits and instructions and there are shops out there that can do it for you, but choose someone with experience of doing this if you want to get your set-up right.