Horsepower, INC

Renowned for technology, quality, and unmatched customer service, HPi is dedicated to delivering exceptional performance parts and comprehensive service, ensuring each Harley Davison motorcycle build is bulletproof.

What Horsepower, INC Makes

Horsepower, INC (HPi) builds performance fuel and induction hardware for Harley-Davidson - throttle bodies, fuel injectors, fuel pressure regulators, intake flanges and the related induction components. What we list from Horsepower, INC moves as the catalog moves.

Fitment

Horsepower, INC fitment is specified part by part, and coverage is not uniform across platforms or model years. Check that the fitment list on the product page names your model and year before ordering.

Why You Need One

A stock ECM is calibrated for the stock intake and exhaust. Open either one up and the mixture goes lean, which costs you the power you just paid for and runs the motor hotter than it should. Tuners come in two broad types: a piggyback that modifies the signal to the stock ECM, and a replacement ECM that takes over entirely. Auto-tune systems correct themselves as you ride using a wideband oxygen sensor; others need a map loaded or a dyno session.