aRacer SpeedTek RC Super X Race ECU – Kawasaki Ninja 400 / Z400 (2018 – 2022)

The aRacer SpeedTek RC Super X is an extremely powerful, fully programmable, race ECU for the Ninja 400 / Z400.  Other fuel controllers such as Power Commander, Bazzaz, and Rapidbike are called "Piggyback" style controllers because they work together with the stock ECU to make small incremental adjustments to the fuel and ignition signal AFTER the OEM ECU.  Because of this, you are still limited by any restrictions, fuel maps, throttle maps, injector timing maps, and many other features that are programmed into the bike's stock ECU.  The RC Super X actually replaces the stock ECU, and plugs into the OEM connector in place of the stock ECU.  All restrictions and limitations found in the stock ECU are removed with it, and all engine parameters can be fully programmed using the RC Super X to maximize the performance of the Kawasaki Ninja 400 engine using the aRacer SpeedTek tuning software, SpeedTuning Super.  Additional features can also be added and customized such as quickshifter, wide band autotuning, and data collection using additional sensors.

The RC Super X is the top shelf tuning system available for the Kawasaki Ninja 400 and offers even more control and better performance than flashing the stock ECU that allows us to push the Ninja 400 performance even farther.  ARacer offers base engine management settings for the Speedtek RC Super X on their website, however, we have over 50 hours invested developing and rewriting our own Speedtek RC engine parameter data and fuel mapping from the ground up and if you purchase your RC Super X from us, your ECU will come preloaded with all of our proprietary data.

See below for a list of some of the enhancements in this race ECU as well as dyno information.