Bully Dog, founded in 1998 in Aberdeen, Idaho, arose out of the desire to improve the performance of diesel engines. They initially developed and patented an effective and safe propane injection system for diesel engines in farm tractors. Not long after, demand increased and Bully Dog delivered, quickly moving from a little operation in their farm shop to industry leader status.

Bully Dog stays abreast of new technology in this industry to bring you the most cutting-edge performance products, from electronic components and software to intakes and exhaust systems. Each product goes through a grueling research & development phase, followed by months of real-world testing. Every step is carried out by Bully Dog's staff of some of the best engineers in the world. This attention to detail and performance is the only way to develop products that beat your expectations - and theirs.