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Tuning up your 6.6L Duramax Diesel engine is simply done when you plug in the Intimidator into your OBD port. You can increases your power in levels of:

55 RWHP / 110 lbs. Torque
80 RWHP / 200 lbs. Torque
100 RWHP / 205 lbs. Torque

Plus, a race-only level of 170 RWHP / 350 lbs. Torque is built into each unit and can be unlocked with the purchase of an optional power code (call for details). This unit does more than just give you power; it also removes the top-speed limit control, sets your odometer for correct road speed if you have oversize tires, plus, it reads and clears engine trouble codes.