Siemens MS42 & MS43 · Single Options
Exactly the adjustment your vehicle needs.
Do you want to adjust individual functions of your engine software but don't need a classic performance upgrade? With QNTUM21 Single Options, you can select targeted software adjustments for supported vehicles with Siemens MS42 or MS43.
Individual adjustments. Without stage tuning.
Single Options are intended for specific changes to your vehicle – for example, a suitable software adjustment when the idle control valve has been removed, or an adjustment to the thermostat control, provided this option is offered and approved for your vehicle variant.
The focus is on the selected function. A Stage 1 or Stage 2 performance upgrade is not included.
Directly via OBD. With the QNTUM21 App.
The supported adjustments are transferred to your ECU via the OBD port using the QNTUM21 App. Removing the ECU is not required for this.
After purchase, you will receive your token via email and/or in your QNTUM21 user account. Identify your vehicle in the app and assign the token to it. You can then use the purchased and enabled range of functions.
Already chosen OTS?
The Single Options offered for your vehicle are already included in the OTS package. No additional purchase of a Single Option license is required for this.
Tailored to your vehicle.
Which individual options are available depends on the engine, ECU, software version, and installed hardware. The scope of your selected offer and the vehicle approval are decisive – not every option is available for every MS42 or MS43 variant.
For extensive hardware modifications that require an individual overall tune, our Custom Tune offer is intended. The corresponding portal will be launched soon.
Important: Software adjustments do not replace professional technical inspection. Your vehicle must be in perfect condition; the selected adjustment must match the hardware actually installed. The technical availability of an option does not automatically mean that the modification is approved for public road use.
First, select your vehicle. Then, open the corresponding offer in the vehicle finder to view the product details and add the item to your shopping cart with your vehicle assignment. Final activation of functions takes place after control unit identification.
QNTUM21