Our GT Platinum Diesel Tuner is our top-selling product - and for good reason. The GT Platinum Diesel is four products in one remarkable unit: a vehicle engine tuner, monitor, gauge, and diagnostic device all in a single unit. The remarkable GT transforms the utility of your vehicle by increasing horsepower, improving fuel economy, and providing a comprehensive set of monitoring features and diagnostic functions. 
* 2013-15 Dodge Cummins Unlock cable must be purchased for tuning. Part# 42214 

* Not legal for sale or use in California on pollution-controlled vehicles.