945LSTANG

superchargers take hp to run. turbos do not.

67mustang302

Turbos actually take power to run as well, in the form of exhaust restriction, but it's far, FAR less than what a comprable supercharger setup takes. And at higher boost levels with bigger blowers the difference becomes even greater. The extreme example is a Top Fuel car, that uses something on the order of 700-800hp just to run the blower.