Horsepower Inc. (HPi) is the leader in v-twin fuel injection, specializing the in the manufacturing design of high performance parts engineered to provide more power and overall performance located on Gasoline Alley in Indianapolis, IN. HPi was the first company to manufacture an aftermarket throttle body and intake replacement for the Harley-Davidson® industry and has continued to lead the way in v-twin fuel injection. With their success in quality of parts and knowledge in the industry, HPi has been able to keep up with the changes of design Harley-Davidson® has made to their existing components and have expanded their product line offering a throttle body upgrade for every fuel injected Harley-Davidson® motorcycle.