It would be a mistake to assume that the airbox on every bike model is highly optimized for size and intake tract tuning. Airboxes are commonly used to simply reduce intake growl so that the intake-plus-exhaust environmental noise limits can be met. In such cases, cutting openings in the air box with the intention of increase air flow may or may not improve power and throttle response in the rpm midrange that you use on the street or the higher rpm range you use on the track. So you’ll need to do some design development of your own. Only a series of dyno runs will give you the answer.
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Shazaam!
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