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

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The Stage 1 tuning software is calibrated for the northern climate, tested by our ambassadors and carefully refined using all our knowledge in snowmobiles and engine management. The Stage 1 brings more power, mostly in the higher rpm-range, and a very appealing characteristic which Maptun is renowned for.


Note: Maptuner X Device is Compatible with Windows PC Operating Systems Only

  • No Speed Limitation
  • Tune RPM Limit: 8300 RPM
  • Requires Premium Fuel for Optimal Performance
  • Includes MaptunerX hardware box, BRP connector cable, Ski-Doo bypass diagnostic/programming cable, and tune license
1 x Ski-Doo 850 E-TEC 165HP Maptuner ECU Power Flash

Get the most out of your Ski-Doo ETEC 850! Our software is calibrated for the northern climate, tested by us and carefully refined using all our knowledge in snowmobiles and engine management. Our Tuning gives the Ski-Doo more power and torque across the entire RPM-range - especially in the mid-range - for outstanding drivability! Our main focus is always overall drivability and accessible performance” at any time, instead of just peak power.

Programming is performed in a couple of minutes with the MaptunerX and you get free access to all tuning software available for your vehicle.

Stage 1 170 HP Specifications

  • Includes MaptunerX Hardware, BRP connector cable, Ski-Doo bypass diagnostic/programming cable, and Stage 1 license
  • No Speed Limitation
  • Tune RPM Limit: 8300 rpm
  • Requires premium fuel for optimal performance

More power - Better response - Faster spool-up - Outstanding drivability!

The feedback from our partners & customers after testing our tuning for the Ski-Doo 850 has been overwhelming. The increase in response and drivability achieved with this tune is beyond what we expected. Our tuning makes the already great Ski-Doo 850 an even better (and more exciting) machine to ride!

Note: Maptuner X Device is Compatible with Windows PC Operating Systems Only

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.

This product is exempt from the emission standards and related requirements of 40 C.F.R. § 1051 as provided by 40 C.F.R. § 1051.620, and California law [e.g., vehicle code§§ 27156 and 38391]. This product is sold only for use in connection with EPA -certified, purpose-built, nonroad vehicles used solely for closed course, nonroad competition/racing and not used for any recreational purpose or on public highways or right of ways maintained by and open to the public. This product is sold only in connection with machines that do not fall under state and/or federal noise or emission standards/regulations. Purchasers who/that purchase this product represent and warrant that the product is purchased only in connection with EPA -certified, emission-regulations-exempt and noise-regulations-exempt competition/racing vehicles as interpreted under applicable state and/or federal law. Questions: Call Evolution Powersports at (715) 247-3862.


My car is absolutely insane. LOVE it. Thank you for everything. Zero issues and even in 95 degree ambient it's not over heating dining or anything. This power dining is 100% perfect. Car is a beast. You guys Rock! - Dynomite Turbo Kit


Evolution Powersports has a reputation of the utmost quality and attention to detail on every product they design. From within the industry and outside, I have heard nothing but great things about this company and my experience has been the same. If you are looking to make more reliable power this company can get you there. Both customer service and product design are top notch and they stand behind their work!

Blake S

Don’t spend much of your money here unless you want gobs and gobs of reliable power

Collision Vision

I wouldn’t go with another company if you payed me

Ryan L

If you truly want to build your project with the best possible parts available, buy EVO. They not only build with the best materials they test and test to make sure you are getting the performance gains they say you will but that the mods will be safe and keep the reliability of the machine as high as possible. Thanks again to both Jim and Todd. Keep it up guys!

John K

Great customer service!
I have had such a great experience with EVO over the course of a year, I wouldn’t even try going anywhere else. Prices are fair and the performance you receive is unreal!!

Dave B

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