what is your opinion of roush superchargers on mustangs?
Exactly. If you're gonna spend a ton of money, might as well spend a little more and get your invesment's worth.i've read that the roush and magnacharger are really eaton SC's in disguise. for the price you could get a better one like whipple, saleen, KB, paxton, or procharger.
"Screw type superchargers are derived from the Roots type concept but with vast improvements for street use. Although from the out side, screw type superchargers may look a lot like Roots type superchargers, on the inside you will find a twin-screw design that compresses air unlike Roots type superchargers which pump the air into the motor."they are both positive displacement blowers but a twin screw and a roots are completely different animals.
SuperchargersOnline.com :: Roots vs. Centrifugal vs. Screw Type Supercharging