Bully Dog Technologies' complete history is built around the diesel engine. They were the first company to develop and patent a safe propane system for the diesel engine. They first developed the propane injection system for their own tractors and then their own pickup trucks before sending them to market. In the fall of 2002, they were first to the market with a plug-on module called the Torque Dog and in 2004 a downloader called the Power Pup for the Dodge Cummins diesel. In 2003, they introduced the Power hound module for the 6.0 Liter Ford Power Stroke. The diligence and dedication demonstrated by Bully Dog's engineering team has been a significant contribution to their success and shows their dedication to ground-breaking new products. The engineering department, with a combined experience of 46 years, is staffed with the most talented, knowledgeable and innovative electrical engineers. Their engineers concentrate on modifications that will increase horsepower, fuel economy and torque. Bully Dog is staffed with a highly professional team that knows diesel performance and will strive to provide you, the customer, with the most functional performance modules on the market. Their customers can be assured that they are at the head of the pack in diesel performance!