In testing on cars, no significant benefit was realized from using ram air until over 100 mph. Further, it can really upset carburetion. They say the only way to pull it off is to make a box that encloses the whole carburetor, and run the ram air to that. I think you might encounter similar problems in your application. Having said that, if it were me I would probably try it anyway just to see. [>:]

Good luck,
AV8TOR