"I believe you meant to say ABOVE the boundary layer."

Yes. It's been a while since I have discussed this. Mike already schooled me. The message that it takes a specifically designed aftermarket hood to achieve any kind of positive pressure at the carb is valid, though. Even the best designs aren't really hugely effective as any HP gain has to be above what the addition scoop drag negates. A bad design can even venturi pressure out of the scoop. That's probably why the SS/H cars aren't sealed.