my dad saw an add for this so-called "Supercharger" in the Mustang and Ford Trader, the national magazine. Well anyways they claim that it adds 30 horsepower, and increases mpg by 31%. It's called Spiral Max, here's the website.
www.spiralmax.com what do you guys think? anyone know any body who has this on their car? if so what do they think? Is it worth the money? I was thinking about investing in it since it's not all that expensive and it's an easy installation. And no moving parts.