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dont waste your time. the best performance you can get from the carb will be with a proper size velocity stack and proper jetting. and if it is a CV carb you will need to ensure the diaphragm is getting some vacuum signal(as it does in the stock airbox) or you will see some funky rich areas in the mid-range.....
as for the Ram-air effect, .... proper Ram air will generate a slightly more positive inlet pressure that over comes the vacuum of the engine. This is VERY difficult to achieve at 40-50mph...and would require a ridiculous funnel-like apparatus to increase the intake velocity enough. That "funnel" would have to be so big it would create more wind resistance than the power needed to overcome it. Basic physics. AND furthermore the carburetor (assuming you were able to achieve positive pressure) would not function properly....as the venturi effect would be disrupted enough to hamper fuel delivery.
I own a dyno..
I am a professional Tuner by trade..
and I understand physics...
Hope this helps.
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