Fits: fuel-injected Harley-Davidson models 2002-2023 with the factory Delphi ECU. Choose the version for your bike: 4-pin for 2002-2013 non-CAN bikes, or 6-pin CAN for 2014-2023 (Twin Cam 2014-2016 and Milwaukee-Eight 2017-2023).

The Maximus is TechnoResearch's single-bike version of the Direct Link flash tuner we run on the dyno: an all-in-one tuning and diagnostic tool that flashes the stock ECU with no piggyback module and no extra wiring. It locks to the first bike it is used on and can be re-flashed on that bike as many times as you like, so you own your tune and can update it as the build changes.

Tuning: separate fuel and spark tables for the front and rear cylinders, air/fuel ratio, warm-up and cranking fuel, closed loop, acceleration and deceleration fuel, rev limiter and knock control, plus auto-mapping that cuts down the cell-by-cell work. It powers and records a wideband O2 sensor, logs data, and backs up and restores the original calibration. Diagnostics: read and clear trouble codes, code key fobs, calibrate the speedometer and test system relays. Runs on a Windows PC, laptop or tablet. Made in the USA.

Buy it with a dyno tune and we will build your map on our Dynojet 250iX and flash it to your Maximus, or order a Custom Harley Map and we will send you a calibration to load yourself.