Get the most power out of your new RZR 170. Dynatek has produced a state-of-the-art EFI controller which allows you to tune both fuel and ignition timing. This controller uses the exact same software, tuning maps, and accessories as the DynoJet Power Commander V. Sparks Racing has been using Dynatek electronics for over 10 years, and we couldn't be happier with the results. It comes preloaded with the Sparks fuel map and can be reprogrammed with the included software and USB cable by your own computer. Also, you can purchase the Dynojet Auto Tune, which will "real time" tune your UTV, so you can run the best possible fuel table.