Originally Posted by mr slow

Plus if you are running a PD blower you shouldn't have to spin it as hard to make the same power(or whatever your goals are)as the other guys therefore reducing heat soak, which means power. That would ring true with a centri blower too whether it be a procharger/vortech or whatever. Spin it easier which makes it easier for the IC to cool the air charge thus resulting in a cooler air charge and more power right? Plus the equipment(the superchargers)last longer because you are not running them right at their limits.