The Bully Dog Torque Dog Module is the absolute best module you can put on your Dodge Cummins! You can receive dramatic horsepower and torque increases in minimal installation time. The Torque Dog is a module that easily plugs into the injection pump or into the port link boost sensor depending on the type of vehicle you own. The Torque Dog plug-in module simply plugs into the injection pump on 1998-2000 24V engines and into the data port link & boost sensor on 2001-02 24 valve engines. The Torque Dog for the 1998-02 models are now adjustable on-the-fly with a stock, 30 & 65 additional horsepower settings. The fully adjustable Torque Dog Plus is designed exclusively for the 2003 and 2004 Dodge pickups equipped with a Dodge Common Rail Cummins diesel engine. The adjustable Torque Dog Plus performance module offers 3 horsepower/torque settings: stock or an increase of 50 hp and 105 ft. lbs. of torque or 90 hp and 190 ft. lbs. of torque for proven maximum gain. The Adjustable Torque Dog is simple to install with most installs taking about 20-30 minutes. With on-the-fly adjustability nothing beats the adjustable Torque Dog and torque Dog Power Plus Modules. The Torque Dog 600 Module easily plugs in using stock connectors and has 3 horsepower settings that can be adjusted while driving. Switching from stock to the middle setting adds an additional 50 HP and 100 lb/ft of torque. The high setting adds 90 HP more with 200 lb/ft of torque. As with all Bully Dog modules it is designed to work in conjunction with the Rapid Flow exhausts and the Rapid Flow Intakes air intakes.