Stillen Supercharger reliabiity

Originally Posted by Boosted Performance

If you are comparing to a N/A or turbo car to a supercharged car, this statement is false.

With the supercharger you always have parasitic loss, and in tern have worse gas milage than a turbo car (every time). This is the energy/power that it takes to spin the supercharger. It is always creating pressure (positive displacement), since it is driven by the engine, and to create pressure you need energy/power.

This is also why a supercharger will always net less HP/PSI compared to any turbo (on the same platform). It can take up to 60hp to create 10psi of boost, depending on the supercharger head unit. This power never makes it to the wheels, as it is spent apinning the supercharger.

This works much like driving your car with the a/c on all the time.