The Economy Xcelerator has been designed for the fuel economy-minded diesel owner looking for mild horsepower and torque increase along with a significant boost in mileage. It offers 3 horsepower levels (40, 90 and 120hp) and can up the torque settings up a full 200lbs. over stock.
The Standard Xcelerator series was specifically designed for 2001 through 2010 Duramax diesel engines and provides five power-tuning levels of additional horsepower and torque (40-225hp depending upon model) while still providing significant increases in fuel mileage.