How can I open up the airbox?
For maximum flow, an L-shaped opening can be cut into the top of the airbox, underneath the seat. If you prefer prefiltered air, 1″ diameter vents with foam inserts are available. Mount them with the vent screen inside the box. You can also cut the raised sections of the airbox door, and place foam in them. You will need to install a grate on the inside of the door to retain the foam.
