Turbo-charge vs Super-charge

[WADS56]

Originally posted by mean81GT
superchargers use horsepower to turn them, turbos do not. it takes about 15% of your power to turn that supercharger, so if you can figure that all else being equal, a turbo will make more power.

That is half true. A supercharger will take power to make it, but a turbo is not free horsepower. A turbo is a exaust restriction. That is why it is important to have a very freeflowing exaust with a turbo because you don't want to add to the restriction. The only free poweradder that I can think of is nitrous.