[Jac Mac]

There are only 3 inlet valves open or partly open at any one time so you really only need about half of the total 25 sq inches in your case of scoop opening to supply sufficient air, assuming of course that your scoop is in a suitable position & not affected by boundary layer etc. Most Cobra scoops will actually work better if you block off the front with a dummy grill & open up the rear to take advantage of the high pressure air at base of screen..