You have found the right energy paths but have lost sight on what is required to increase HP. It is possible to force feed the engine using engine power to compress the air. This is how a belt driven supercharger works. System efficiency is very good because enough pressure and CFM is generated to more than make up for the losses in the compressor and belt. The electric supercharger does what it is supposed to it just doesn't make that big of a difference because it is a fan, not a compressor. It can only generate a slight amount of pressure, probably much less than 1 psi. If they did switch to some type of electric compressor the powerdemand would exceed the capabilities of the alternator. In this case lets concentrate on the things that make power, pressure and CFM, not efficiency. Perpetual motion is 100% efficient, but I see no top fuel dragsters moving in that direction.