Diesel Power Source was started in 2003.   It’s founder and head design engineer holds several patents related to automotive, medical, drilling, and fluid dynamics.  D.P.S. was the first company to introduce a quick-spooling compound turbo kit (twin turbo kit), at a time when the only twin kits available were very laggy, and expensive., made with mass-produced parts.  D.P.S. made twin turbo kits common place, by forcing competition into the market.  This made it so the average Cummins driver could afford a twin turbo kit for their truck.