Official Release May 15th 2026

The Precision EFI Stage 1 adds 18 WHP to the Outlander 850. That's 24% more power to the wheels, for the 850 our adjustable clutch weight are mandatory to achieve those gain.

Stage 1 for 850 consists of :

-Stage 1 Reflash & ECU Unlock

-PEFI Adjustable clutch weights

Adjustable Speed Limit

Precision EFI have developped an adjustable speed limit for the learning key.

The adjustment is only possible with the performance key. Once adjusted to your desired speed , the learning key will be limited.

ECU lifetime warranty included after this unlock service
Get quicker and more precise throttle response
10% increase in fuel economy at cruising speeds
Eliminates engine stalling and idle dips on throttle release
Reduced exhaust heat at steady throttle (cooler between the legs and under the seat)
All speed limiters removed
Significantly smoother throttle delivery
ECU unlocking service included.

This flash works with 87 Octane fuel, but we highly recommend using 91 Octane exclusively.

AVAILABLE FOR ALL OUTLANDER 850 2025+, including the 6X6 !

Keep the OEM ECU and all its must-have features

The new ECU in your Outlander 850 2025+, the Bosch MG1 is by far the most advanced in the ATV industry. The new Bosch ECU is almost 2 years of development from a group of BRP and Bosch engineers. Without a significant investment made by an ultra-experienced and competent firm, it's impossible to match this technological advanced ECU.

The MG1 incorporates several essential features such as Cold Start Technology and the ultra-advanced and adaptive knock system that acts instantly to adjust the engine setting depending on the quality and octane rating to eliminate the risk of engine damage.

Ramp adjustment starting point

For a stock spring and helix combination in good condition, to achieve the target RPM. Please note; a modified spring and helix combination or tire size affects the final result. Therefore, we cannot provide settings for every application.

The test should be performed as follows: accelerate quickly but gradually to avoid slippage. While accelerating, wait for the RPM to stabilize, then take an RPM reading. If the RPM is too high, add weight; if too low, reduce the weight.

Note that surface conditions vary and affect RPM.

The 6-wheel model will not be too far from these settings because even though it is heavier and has more inertia due to the number of wheels, it has a different gearbox ratio.

- 76g PEFI adjustable ramps

- Target RPM: 7800

- add 2.8 g on each ramp (use purple or blue Loctite).

- A screw head flush with the top of the hole (at the heel) is the most common setting.

* With this flash, the ECU Unlock service is included and feature a lifetime warranty on the ECU Click here for more information

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