Joined: Aug 2009
Location: Colorado Springs
The mileage doesn't mean anything if you have the proper fuel components and a good tune.
Comparing centri's with twin-screws is like comparing apples to oranges, kinda. There are advantages to each.
Either way, you're gonna spend a ton of money, and then you're gonna spend more money when you realize that you're really going to want an intercooler later on.
Putting a supercharger on a car without an inter/aftercooler is stupid. Trust me.