Ski-Doo 850 E-TEC 165HP Maptuner ECU Power Flash

Always setting the bar very high when we begin development on new engine tuning software, for this particular model, the development process took months in order to make sure we brought the best possible performance in every aspect.

The first thing we did was to get familiar with the vehicle and the engine construction, and perform thorough tests on the stock configuration in our dyno facility. At this stage we installed a variety of sensors to accurately measure pressures, temperatures, fuel, flow and power. With full access to the ECU and all its different maps we began localizing the necessary parameters that would need to be adjusted. By adjusting in small increments and performing many, many test runs on the dyno, we closely monitored the process and recorded how the engine responded to every change. We also stress tested the engine by running it hard over extended periods of time, at both full and partial load, to make sure temperatures and other parameters didn't reach harmful levels over time.

Once we have achieved the power figures we desired, field testing began. Driving the vehicles in the same environments as our customers is crucial to getting the best possible drivability. All the sensors are still installed on the vehicle and we get copious amounts of data for review. Thanks to the MaptunerX, we can also test, adjust and refine the tune on location during field testing. After field testing the software we hand it over to our partners and racers. This is the key to test the tunes in real-world situations and with many different driving/riding styles. Using the MaptunerX Data Logger we received crucial feedback and even more data to analyze. We then adjust the tune individually and let different drivers try out different tunes to see what works best.