Questions about the Wiesel tuning module
On the Bosch Active Line and Perfomance Line models (up to 2019), the left crank often has to be removed so that the motor cover can be removed. A crank puller is available to order for this purpose.
It is best to check how to remove the motor cover before ordering.
Of course, this depends somewhat on the type of bike and the gear ratio. Usually 35 km/h will be possible on the flat without any problems or effort. Above 40 km/h, the gear ratio of the bike will usually no longer be sufficient and the pedaling speed will be too high.
Fuel consumption does not increase below 25 km/h as a result of tuning. There is no more torque than without tuning (unlike car tuning, for example). At speeds >25 km/h, battery consumption then increases sharply, as the power required depends mainly on air resistance. This increases quadratically with speed.
If the range is not to be reduced too much even with tuning, then we recommend simply switching down the assistance level (e.g. Eco). This way you can still benefit from tuning, but the range will not decrease as much.
Very probably yes. An overview of which tuning module is required can be found here:
Incorrectly selected plugs / sockets are very often the cause of installation problems. Please compare the photos in the installation instructions with your actual installation situation. Not all plugs are always connected if, for example, no light is installed. The speed sensor plug is often confused with the light plug. The Bosch speed sensor plug is always gray at the front.
If you have any questions, please always send us photos of the installed tuning module showing all plugs and sockets.
This usually means that the eBike only supports up to 25 km/h as without the tuning module. The tuning module is not defective but simply deactivated. It can be reactivated very easily.
There are instructions here:
This is usually because the bike has not been switched off long enough to change the mode. Especially with newer displays such as the Nyon or the Kiox, it can take some time until the bike is switched off and the chip is de-energized.
With the Kiox300, you have to wait until the text "See you soon..." has gone out and the display has gone black. This can take up to 15 seconds.
Please check whether the magnet is correctly aligned. Otherwise the magnet pulses will not be sent cleanly to the tuning module.
Move the magnet exactly 3 times past the sensor (do not stop in front of it) and not twice as often by mistake.
If you are not sure where the magnet is (e.g. because it is in the brake disk), you can also simply make 3 full rotations with the rear wheel. This will ensure that the magnet passes the speed sensor exactly 3 times.
The basis for the accuracy is the wheel diameter stored in the motor control unit, regardless of the tuning module. First adjust this (in the Intuvia, Kiox or Nyon display) or have it changed by your dealer (Purion display). Then carry out the calibration again. The tuning module converts the speed exactly. For example, 32 km/h is displayed exactly as 23.2 km/h.
If 20.0 km/h is not displayed on the speedometer after switching on the eBike, the tuning module must be calibrated once. The conversion to the modified speed is then correct.
The calibration remains permanently stored in the tuning module even if it is removed.
There are several possibilities here:
1. Is 20 km/h displayed briefly after switching on?
If not, then the tuning is simply deactivated. Here are the instructions for switching the tuning back on permanently:
2. Is a value other than 20.0 km/h displayed after switching on?
If so, please call up the calibration once.
3. Sometimes the setting for the maximum assistance speed is inadvertently changed instead of the calibration. There are 2 setting options:
"Maximum assistance speed": you can access this mode with 4 magnetic pulses
"Calibration mode": you can access this mode with 5 magnetic pulses
It is best to carry out the calibration first and then set the maximum speed again (e.g. to 35 km/h).
4. Last but not least, there is also the phenomenon that you are actually riding at 35 km/h and the motor switches off. As a driver, however, you think that you are only traveling at 25 km/h:
The speed display is modified from 22 km/h upwards. At 32 km/h, for example, only 23.2 km/h is reported to the motor, which continues to provide assistance. The display can be read by ignoring the leading 2 and the decimal point.
From a speed of 35 km/h, the display then jumps from 23.5 to 25 km/h so that the motor switches off the assistance. This means that you are actually riding at 35 km/h even if the speedometer only shows 25 km/h.
No, because no tuning module can be installed without a speed sensor.
You can ask your dealer to convert the system to a normal magnet. Tell him that the magnetic cleats interfere with the speedometer. Or that the rim magnet is constantly switching off your pacemaker. It is also possible that your Doberman with the iron necklace is now constantly doing somersaults when you go for a walk...
The software on the motor (also known as the drive unit) is particularly interesting. This can be read with any display. You can find instructions on how to do this at this link:
Yes, the display shown in the instructions is only an example. The Wiesel tuning is independent of the display and even works without a display. See also the next question.
Yes, in principle the operation also works without a display. The only difference is that when the eBike is switched on, it is not indicated whether the tuning is currently on or off.
For tunings that only support up to a certain speed (e.g. for the Bosch Smart System), the calibration should be called up once. Otherwise, bikes with a large tire circumference in particular will not be supported up to the set speed (e.g. 35 km/h). The eBike Flow app can be used for this with the Smart System. See also the next question.
Tuning is operated with the eBike Flow app in the same way as with any other display.
If a mode is to be changed (e.g. deactivate tuning), the eBike only needs to be switched off so that the tuning chip is de-energized once. The cell phone and the app can remain on.
All eBike tuning increases the cut-off speed. More power (as with car tuning, for example) is not possible.
No, that is not possible.
Unfortunately not. The tuning module only works on eBikes with a mid-motor.
Payment, shipping and returns
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Yes, we value the freedom of movement of the European Union and want to support this by making no distinction for shipping. From a value of EUR 50, shipping is free of charge to all 27 member states.
Of course! Install and try it out in any case. A return is always possible within 30 days.
Please send us a short email. We will send you a link to a free return label.
Unfortunately, we cannot provide a return label for returns outside Germany and therefore cannot offer free return shipping. Please send us the product with tracking to our return address:
RS Innovation GmbH
Tilsiter Weg 4
Please understand that refunds may take a few days, especially during peak season.