Quote:
Originally Posted by Dipstik-sportech
The limit to power is the amount of air the blower can flow not the max psi.
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Yes, this is true. The blower, being a PD pump, will move a fixed volume of air every time it rotates (if you ignore pumping losses due to pressure ratio). If the engine doesn't consume all of the air volume that the blower moves then the result will be an increase in boost pressure in the manifold.
Since superchargers typically do not have any method of closed-loop boost control like turbos do that means even at a steady state (load the engine so that a given throttle input does not result in an increase in RPM) the boost will still build over time even without an increase in RPM until it hits equilibrium due to a drop in pumping efficiency as the pressure ratio increases.
-Matt