Bully Dog Promo & Coupon Codes November 2019

Gas and Diesel Performance Bully Dog was formed in 1998 in Aberdeen, Idaho. The founders of Bully Dog � Michael, Phillip, and Daryl Klassen --were heavily influenced by their father Harold's interest in improving vehicle performance. Several years prior to the company's inception, Harold had experimented with increasing performance on his diesel farm tractor by injecting propane into the engine's combustion chamber.