There are different styles of superchargers one that bolts in place of your intake like a Saleen ,Keene Bell ect, and the one that bolts to the front of the engine like Paxton Procharger ect. What are the pros and cons of each style? Which will produce more hp?

 

roots/twin screw usually give full boost around 2000rpm
centrifugal supercharger usually gives full boost around 3500-4000rpm

 

The twin screw styles, like saleen and KB, develop boost down low, and make lots of low end torque, but fall off on the top end. They are more expensive to buy, and usually more expensive to install.

Paxton/vortech/procharger etc are centrifgual type. They don't develop boost down low but they pull all the way to redline. They are cheaper to buy and cheaper to install.

Its a large debate which is better. For the money, IMO you cannot go wrong with a centri. People say they are "not as fun on the street" etc, but once again IMO its all bull****.