205+ Horsepower – Simple Plug-and-Play Power on 91 Octane Pump Gas / Includes Clutch Kit / Intake and Charge Tube, and Lightweight Muffer.
Unlock the full potential of your Ski-Doo 850 Turbo with Straightline Performance’s Competition ECU Flash packages. By recalibrating your factory ECU, we deliver maximum horsepower, unmatched throttle response, and reliable pump-gas performance—all with simple plug-and-play installation through your diagnostic port.
Up to 205 Horsepower Output – Unlock massive gains from your Ski-Doo 850 Trail Turbo with a recalibrated ECU.
Plug-and-Play Installation – Quick and simple flash through your factory diagnostic port; no wiring or splicing required.
91 Octane Pump Gas Compatible – Maximum horsepower on fuel you can find at any local station.
Reflash of Stock ECU – No need for additional boxes or piggyback systems; uses your existing ECU.
Competition-Calibrated Mapping – Precision tuning for throttle response, boost control, and reliability.
Stage 1 Flash Option – 205+ HP performance package available (SKU 141-111).
Clutching Compatibility – Optimized for performance clutching setups; clutching adjustments required if a kit is not purchased.
- Includes –
Lightweight Muffler Click here for link. https://straightlineperformance.com/product/2023-ski-doo-850-gen-5-factory-turbo-lightweight-muffler-stainless-steel-copy/ - Clutch kit with all calibrations setup for the new HP. https://straightlineperformance.com/product/ski-doo-mxz-x-rs-850-turbo-r-performance-trail-clutch-kit-0-3000ft/
Charge and Intake Tubes https://straightlineperformance.com/product/2020-to-current-gen-5-skidoo-850-turbo-silicon-intake-kit/
Benefits
Maximum Power, Zero Hassle – Get competition-level horsepower without complicated installs or race fuel requirements.
Reliable Daily Performance – Ride hard with confidence on 91 octane pump gas — perfect for both trail and mountain riders.
Improved Throttle Response – Sharper, more responsive feel for aggressive acceleration and quicker pull.
Proven Straightline Performance Tuning – Backed by years of dyno testing, race development, and snow-tested results.
Additional Features with the Straightline Flash for NO extra Charge
Diagnostics
Read and clear fault codes directly from your ECU.
View real-time system status to quickly identify problems.
Saves you time and money by eliminating guesswork or unnecessary shop visits.
Data Logging & Performance Recording
Record live engine parameters such as boost, RPM, throttle position, temperatures, and more.
Save runs for review and fine-tuning.
Great for racers and enthusiasts who want detailed insight into performance.
Export logs for deeper analysis on your computer or to share with your tuner.
- Example of Data Aquisition Below.
Plug & Play Simplicity
No laptop required – all functions are done directly on your cell phone.
Easy-to-use interface with clear menus and navigation.
Compact and portable – bring it with you anywhere.
In short: This ECU flash transforms your Ski-Doo 850 Turbo into a true powerhouse — with instant, reliable horsepower gains and the confidence of proven tuning expertise.
Check out the Video..
Ski-Doo 850 Turbo Competition Tune – 205 HP ECU Flash | Straightline Performance
Here’s a look at our Ski-Doo 850 Turbo running the Straightline Performance Competition ECU flash — 205 horsepower with our sound muffler and intake tubes. This setup flat-out rips, running a 5.82 at almost 113 mph in 660 feet down at Martin, Michigan.
SLED at the Scale in Martin was 760lbs. Full Ride Weight – No Lightweight Cheating!
This is the same flash we run on our own sleds — proven power, clean sound, and strong pull all the way through.
Setup:
Straightline Performance 205 HP ECU Flash
Straightline Vari-Sound Muffler
Straightline Intake Tubes
If you want a setup that runs hard and sounds right, this is it.
#StraightlinePerformance #Skidoo850Turbo #SnowmobileRacing #205Horsepower #MartinMichigan
