Dynojet Research

Dynojet is dedicated to enhancing performance and speed for your Harley Davidson. From pioneering Jet Kits that optimize your motorcycle’s air/fuel ratio to advanced Power Packages, Dynojet has the performance your motorcycles needs.

What Dynojet Research Makes

Dynojet builds fuel and ignition tuning equipment: piggyback and replacement tuning modules, autotune and wideband oxygen sensor kits, carburetor jet kits, and the dynamometers the maps are developed on. What we list from Dynojet moves as the catalog moves.

Fitment

Dynojet Research 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.