The EZ is the ultimate performance upgrade for the driver that wants affordable adjustability, added towing power, quick and easy installation, and improved fuel economy. The EZ offers a quick 10 minute installation that requires no expensive mechanic labor, no drilling, and no computer downloading. Simply plug the Edge EZ into 2 stock connections and you're ready to go.You can switch between 3 power levels to add up to 65 HP. The EZ safely provides power to help eliminate downshifting while towing. The EZ is also tuned with a special fuel economy level* that improves the atomization of fuel, which in turn allows Edge to add power, while at the same time delivering between a 5-10% improvement in MPG when driving in level one. Add to that the EZ's price point and you have the ultimate value on the performance market today.