Siemens SIMOS18 Catalyst Removal

NuoVolta provides a ready Catalyst Removal solution for the Siemens SIMOS18, used in Audi, Seat, Skoda and Volkswagen vehicles. The NuoVolta client recognises your original file, applies the solution and handles the related DTC codes.

✓solution files for this solution
10solutions on this ECU
49DTC sets
Sep 2026last update

How it works

Applying Catalyst Removal to a Siemens SIMOS18 file takes three steps.

  1. Read the fileRead the original file from the Siemens SIMOS18 with your tool.
  2. Select the solutionOpen it in the NuoVolta client and select Catalyst Removal.
  3. Write the resultSave the modified file and write it back to the ECU.

About Catalyst Removal

CATALYTIC CONVERTER A catalyst in vehicles, commonly referred to as a catalytic converter, is a critical component of the exhaust system that helps reduce harmful emissions produced by the engine. Its primary function is to convert toxic gases and pollutants in exhaust gas into less harmful substances before they are released into the atmosphere. FUNCTION OF CATALYTIC CONVERTER The catalytic converter operates on…

Read more about Catalyst Removal

Most requested solutions

Ranking of the solutions NuoVolta users apply most often to this ECU.

  1. 1 Stage 1
  2. 2 Speed Limit / Vmax Removal
  3. 3 PopBang
  4. 4 Start & Stop Disable
  5. 5 Rev Limiter Removal
  6. 6 GPF Removal

Frequently asked questions

Is a ready Catalyst Removal solution available for the Siemens SIMOS18?

Yes. NuoVolta has a ready Catalyst Removal solution for the Siemens SIMOS18. It is applied with the NuoVolta client.

Which vehicles use the Siemens SIMOS18?

According to the NuoVolta database, the Siemens SIMOS18 is used in Audi, Seat, Skoda and Volkswagen vehicles.

Are the related DTC codes handled?

The Catalyst Removal solution is applied together with the related DTC handling. If other codes remain, the DTC removal feature can disable them.

Diagnose and repair real faults first. Removing or disabling emission systems is only permitted where allowed by law, for example for off-road or motorsport use.

Ready to work with the Siemens SIMOS18?

Get the NuoVolta client and apply ready solutions to your ECU files.