⚠ Software work on emission systems is offered only for uses permitted by applicable law (motorsport, off-road use, export, fault diagnosis, etc.). Road use and inspection compliance of the vehicle remain the owner's responsibility.

MJD9 (ALL) chip tuning and remap solutions

The Marelli MJD9 (ALL) is an engine control unit used in cars from makes such as Fiat. Prime Chiptuning always builds MJD9 (ALL) files from the original read of the vehicle; generic files are not used.

Solutions offered for this ECU family include DPF Delete, Stage 1 Remap, AdBlue / SCR Delete, Swirl Flap Delete, EGR Delete and Speed Limiter (Vmax) Removal. Which ones apply to your vehicle depends on the exact ECU variant, software version and engine; we check this from the read file before the work starts.

How a MJD9 (ALL) remap is done

The MJD9 (ALL) is read by OBD, bench or boot depending on the variant, and the original software is backed up.
The original file is modified for the vehicle, engine and requested solution; the checksum is corrected.
The file is written, fault codes are checked and the vehicle is road tested.
The original backup is kept, so the vehicle can be returned to factory software at any time.

Why Prime Chiptuning for MJD9 (ALL)

Our service points tune the MJD9 (ALL) for each vehicle individually, with support after delivery. Workshops with their own tools can order MJD9 (ALL) files on the ECU Prime file platform.

Order MJD9 (ALL) files on ECU Prime ↗

Makes using this ECU

FIAT

Vehicle types

Car

Are you a tuner or dealer?

Verified Stage 1, DPF, EGR and AdBlue files for the MARELLI MJD9 (ALL) are available on the EcuPrime file service: upload your original file and compatibility is measured in seconds.

MARELLI MJD9 (ALL) files on EcuPrime →

ECU file service Car tuning files Slave dealer: first 5 files free

FOR WORKSHOPS AND TUNERS

Notify me when a new MARELLI MJD9 (ALL) solution is released

We email you when an unlock, a new operation or an on-site solution is added for this ECU family. No advertising; technical announcements only.

Frequently asked questions

Is DPF Delete possible on the MARELLI MJD9 (ALL)?

Yes. Our library contains a verified DPF Delete solution for the MARELLI MJD9 (ALL). Once your original file is read, compatibility is checked and the job is applied.

Is Stage 1 Remap possible on the MARELLI MJD9 (ALL)?

Yes. Our library contains a verified Stage 1 Remap solution for the MARELLI MJD9 (ALL). Once your original file is read, compatibility is checked and the job is applied.

Is AdBlue / SCR Delete possible on the MARELLI MJD9 (ALL)?

Yes. Our library contains a verified AdBlue / SCR Delete solution for the MARELLI MJD9 (ALL). Once your original file is read, compatibility is checked and the job is applied.

Is Swirl Flap Delete possible on the MARELLI MJD9 (ALL)?

Yes. Our library contains a verified Swirl Flap Delete solution for the MARELLI MJD9 (ALL). Once your original file is read, compatibility is checked and the job is applied.

Is EGR Delete possible on the MARELLI MJD9 (ALL)?

Yes. Our library contains a verified EGR Delete solution for the MARELLI MJD9 (ALL). Once your original file is read, compatibility is checked and the job is applied.

Is Speed Limiter (Vmax) Removal possible on the MARELLI MJD9 (ALL)?

Yes. Our library contains a verified Speed Limiter (Vmax) Removal solution for the MARELLI MJD9 (ALL). Once your original file is read, compatibility is checked and the job is applied.

MARELLI MJD9 (ALL) Chiptuning

Available operations

DPF Delete

Stage 1 Remap

AdBlue / SCR Delete

Swirl Flap Delete

EGR Delete

Speed Limiter (Vmax) Removal

Lambda / O2 Sensor Delete

Decat / Catalyst Delete

DTC / Fault Code Removal

Immobiliser (Immo) Solution

Stage 3 Remap

Stage 2 Remap