Most superchargers require extensive modification of your engine - including additional belts and pulleys which actually drain horsepower from your engine just to run (you've heard of this - it'* called inefficient.) All belt-driven superchargers need horsepower to run--sometimes as much as 20 percent of engine’* total. This is where an electric supercharger comes in - it requires no extensive modifications, and better yet - no belt to rob your engine of horsepower! This supercharger draws its 12 volts off the power that your alternator is already making!

Does not reduce air flow while not in use.