If you want to get the most out of your Polaris Sportsman and make sure that all your systems and components are firing on all cylinders, tuning and /or reflashing your ACE’s electronic control unit is essential. Especially with regards to clutching, fuel injection, cooling processes, and the exhaust system, running the correct tune can make a night-and-day difference. ECU tuners will grant you ultimate control of your machine, allowing you to upload a variety of tunes and fuel mapping schematics for different terrain types and trail conditions. If you want the option to have 100% throttle, are tired of that factory-set speed limiter, and would like all your aftermarket accessories and upgrades to play nicely together, an ECU tuner is the best approach. After all, the best ACE clutch upgrades and exhaust systems in the world won’t function at peak capacity if they’re not integrated optimally with the rest of the machine as a whole. Be it an ECU tuner or even a replacement Sportsman ECU, Everything Polaris RZR has the right tech to tune up your rig’s computer controls.
Aftermarket Assassins has a great ECU tuner for the Polaris ACE 900sp. It is easy to use and you can tune it yourself in about 5 minutes or so. You just plug it into the OBD 2 port under the dash and you’re good to go. You can leave it in tuned mode, go back to stock tuning, or load a domain-specific tune for sand, mud, or hill climbs. And if your 27” aftermarket tires took a little off your top speed, you can get it back by raising the RPMs with an ECU flash. A lot of riders we know run all their machines using the PwrTune tune with ECU’s flashed. EVO, Dynojet, and Bikeman Performance also make ECU tuners that complement their clutches, exhausts, and other products. While the final horsepower gains vary from rider to rider, removing the governors alone really makes a difference in response and driveability. Especially on the sand, where the power is sapped from even the highest-end UTVs, a Polaris Sportsman ACE ECU tuner will put power where it is needed, when it is needed.