For more details, visit us at: www.powersportsefi.com After countless hours tuning and testing on our AXIS UTV dyno our Polaris RZR 900 ECU tunes are tested perfected and ready for you. Our RZR 900 ECU tunes apply to all 2015 2016 and 2017 RZR 900 models. This includes 900 trails and 900S models two seats or 4 seat models.

The largest performance gain to be had with ECU tuning is normally fuel trim settings and spark advance. But for the RZR 900 it appears that Polaris has significantly held back performance. Call it torque limiter or shaft saver, the stock ECU setting do not allow your machine to achieve full throttle. If you watch the YouTube video below you can see a clear example of this. When you push the pedal to the floor of your RZR 900 the electronically controlled throttle blade opens up all the way for almost a second, then throttles back to about 70-75% throttle. If the video continues the machine further throttles back at about 50mph to only 60% throttle.

PwrTune ECU tuning for the RZR 900 and 900S addresses this issue and allows for full throttle blade opening when you put the pedal to the floor as you can see from the second half of the video.  Along with that we have optimized fuel and spark timing depending on what fuel grade you select and also any other performance modifications you have made such as RZR 900 intake or performance exhaust. Other modifications include the elimination of speed limiter in both high and low gears. Increased RPM limiter is suggested to be set at 8700 up from the stock 8300rpm rev limit but the specific limit is your choice. And finally you can choose which temperature you would like your cooling fan to turn on or off for increased cooling efficiency.

All of our tunes are backed with our free Warranty/Recall Flashback Protection. If you have a problem in the future, trans takes a crap, EPS blows up, and you gotta take it in for warranty work. Or more annoying another RZR recall?? Come on! No worries, we've got you covered with Free Warranty/Recall Flashback Protection. What does this mean? Basically, if you have an issue and need your stock ECU back to stock, we will flash it back to stock for you no charge. Check our website powersportsEFI.com for details. If you have turf mode, active decent, or any option these tunes will work great with no check engine lights or running/starting issues. Since we adjust your stock tune and don’t just wipe your ECU with someone else’s adjusted tune we don’t have the random problems other tuning shops have.

We have fresh ECU’s available at an additional charge ready for immediate shipping. Or you can send in your ECU for reflash tuning. Your stock file to be read and saved with your name and ECU serial number before adjusting your specific ECU tune to the specifications you have requested. Your ECU will be tuned and sent back out to you the next business day. Contact us today and send in your ECU for performance tuning.