PearTune MSO 4.0 Tuning kit for Avinox DJI M2, M2S

The tuning kit manipulates the speed signal without altering the motor's power relative to pedaling speed. This guarantees a smooth motor control without speed limit interruptions. Depending on a tuning kit, some determine when assistance stops, while others remove the restriction entirely for continuous support. However, the achievable speed mostly depends on the eBike model. Achievable speed can be calculated using a simple formula:

Speed = Cadence [rpm] * Wheel circumference [mm] * Front Chainring Teeth / Rear Chainring Teeth * 60 [min/h] / 1.000.000 [mm/km]

Activation/Deactivation can be done in this way:
• by pressing the – + – + button combination (i.e. 4 presses) , start from the TURBO assistance mode by pressing the MINUS button . Chip activation is indicated by the display of 19 km/h instead of the current speed for 2-3 seconds. Chip deactivation is indicated by the display of 12 km/h instead of the current speed for 2-3 seconds. Calibration is performed completely automatically when the chip is first turned on or off

Displaying values

When riding with the chip on, the e-bike display correctly displays the actual speed up to 22.9 km/h. After exceeding this value, the actual speed is displayed on the last two digits of the display, for example: 23.3 corresponds to a speed of 33 km/h, 24.2 corresponds to a speed of 42 km/h, etc.

Please note that the operation of this type of modified electric bikes on public roads may be against the law in some countries. The manufacturer takes no responsibility for damages resulting from the use of Peartune products. Electric bikes equipped with Peartune products are not allowed to be used on public roads, cycling paths and public places. Electric bikes equipped with Peartune products can be used exclusively on private property and entirely at one’s own risk. The use of Peartune products may void the warranty of your ebike.

We strongly recommend using other safety features and protective gear to prevent injuries in higher speeds.

Peartune products are thoroughly tested and we stand by their quality - Peartune provides Lifetime warranty to all their products.

Warranty does not cover damage resulting from eBike software updates. Remove the tuning kit before updating the software. Check with us first to ensure the kit is compatible with your updated eBike. We cannot guarantee that the kit will function the same after updates. Please exercise caution.