Torque storm super charger

If you have a really good induction and exhaust system, the SC could deliver only 5psi and way way out perform a stock engine at double the boost.

Do your home work.

You do not need a lot of boost (but more the merry!) to make really good power. A well designed high flowing system coupled with a health cam will reduce the amount of psi seen at the gauge vs a stock engines restrictive set up.