Marelli MM9GFH Catalyst Removal

NuoVolta provides a ready Catalyst Removal solution for the Marelli MM9GFH, used in Alfa Romeo, Fiat, Jeep and Lancia vehicles. The NuoVolta client recognises your original file, applies the solution and handles the related DTC codes.

✓solution files for this solution
5solutions on this ECU
23DTC sets
May 2026last update

How it works

Applying Catalyst Removal to a Marelli MM9GFH file takes three steps.

  1. Read the fileRead the original file from the Marelli MM9GFH 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 Flex E85

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Frequently asked questions

Is a ready Catalyst Removal solution available for the Marelli MM9GFH?

Yes. NuoVolta has a ready Catalyst Removal solution for the Marelli MM9GFH. It is applied with the NuoVolta client.

Which vehicles use the Marelli MM9GFH?

According to the NuoVolta database, the Marelli MM9GFH is used in Alfa Romeo, Fiat, Jeep and Lancia 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 Marelli MM9GFH?

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