The WatchDog™ works on all 1996 and later vehicles with an OBDII port. The product comes equipped with a Set Up Wizard that calibrates the product to your vehicle in order to provide maximum efficiency and calculate wasted energy. The WatchDog™ serves as a digital gauge/monitor and features a valuable Driving Coach for gas and diesel powered vehicles. It features the ability to monitor over 20 vehicle parameters all while you receive valuable driving suggestions from the Driving Coach to maximize fuel economy. Performance Tests: Horsepower, Torque, 0-60 Times in Seconds, 1/8 mile Times in Seconds, and 1/4 mile Times in Seconds. Allows you to monitor up to 5 parameters at once. Pre 2007.5 Diesels will need Pyro Probe Kit #40390 to monitor EGTs, 2007.5 and new diesels use stock sensors. FREE Shipping!