Test just done with Supercharger system

[BreathlessPerformance.com]

To answer the mpg question, the only time that the MPG would decrease is if you are under full acceleration. Under part throttle conditions the MPG would increase due to the efficiency of the engine.
Our company is well known in the Corvette industry to the point to where our products are available through GMs performance catalog and our network of 300 dealers. We even support our own SCCA road race and NHRA Drag teams. All our products are thoroughly tested in our R & D dept before it goes to the public.

As for the 2 types of supercharger systems here are the differences.

Magna unit has less upper HP but more bottom torque, pretty easy to install, a little less expensive and offers a 3 year 35,000 mile warranty for 200.00 extra.

Procharger unit has greater HP gains in the upper RPM but a little harder to install.

Our opinion is that for a stock cubic inch or non head and cam engine to use the Magna charger. For under 550 HP

For larger Cubic inch or head & cam packages the Procharger unit will be more effective by being able to provide the required CFM to produce the needed boost. For over 550 HP

If anyone wants please call me and I will explain in greater detail about the supercharger differences and there function.

Thank You, Ernie
BreathlessPerformance.com
954-925-7725