| There is a difference between turbulent air and pulsed air, the underside of a 916 tank in conjunction with the airbox is specially designed to use the pulsing to help produce power by way of acting as a Helmholtz resonator, something Shazaam! did a great post on years ago.
Not sure what you think your air useage is
here are a few questions that may help you answer that
A, How many cc's of petrol do you use in a race
B, What air/fuel mixture do you run
c, How long is the race in minutes
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