This is for 5.9 cummins 04.5-06 three power levels 25-45-65 HP and 50-77-150 ft-lbs of torque and is adjustable from the cab. I have a 05 2500 4x4 4dr and average 600 miles per tank when the light comes on that is when it is on level 3 the most I got was 670 . The power is absolutely amazing. Please call with any questions (719)250-0060 James W $300 at your door.