>Roots style superchargers will make lots of low end which is
>useless on fwd, but not much up top. Centrifugal make lots of
>top end power but not much down low. A well specced turbo is
>the happy medium for a small displacement motor.
>
>The only advantage I see to superchargers are less complexity
>and easier to maintain. I am not a fan at all for small
>motors. They are not more efficient. They use power to make
>power. How else did you expect to drive them? Just like your
>accessories, they are a drag and load on the motor. The more
>power and more you try to spin them, the more power they take.
>Turbos are using spent exhaust and make the engine more
>efficient. Perhaps more heat, but far more efficient in the
>end. Superchargers are great for making what I consider medium
>range power (in the 200hp range) if that is all you want.

I'm assuming your speaking of this as it pertains to the 4Cyl crowd, because I know of many a V8 that is in the 1000HP range with a supercharger on it.....