FZ-07 airbox

Here is a chart showing 3 different airbox setups. This engine is *extremely* sensitive to intake lengths. Shown are 3 different setups with different velocity stacks. The one with the most peak power is short with individual filters. The one with the best overall spread is shown in the next picture. And the one with the good midrange but severe dropoff at high rpm is what happens when it is too long.