Quote: There is no way to spin anything without expending energy. The energy in this case comes from the fuel.
Turbochargers are recovering some of lost heat energy in the exhaust stream, unlike a supercharger which is stealing it off the front of the crank.
One reason why turbos will always make more power than a supercharger.
And to put a real world approx number on that lost heat/energy in the exhaust/radiator/block, its roughly equal to the flywheel horsepower, and if cooling the exhaust temp by using that wasted energy to run a turbo, I'd say a turbo is more econonical to run, but as stated numerous times before not install.
Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
