Instead of installing a turbocharger in addition to the supercharger, would it be possible to engineer a "drive assist" for the supercharger. That is, could you use either the dynamic pressure of a ram intake, or the pressure of the exhaust to help drive the supercharger. Essentually you would create a supercharger/turbo hybrid. At low speeds, the supercharger gets all it's energy from the engine rotation, but as you start building up speed, you could wind up a mechanical drive, or even power an electric drive, to cut back on the horsepower that the supercharger is robbing from the engine. If our charger is eating up 50 hp at highest boost, is that 50 hp we could capture back, with the proper engineering?