MARELLI MJD8 (ALL) Chiptuning
The MARELLI MJD8 (ALL) is used in Car vehicles from makes such as FIAT, OPEL, LANCIA. Our library holds verified solution files for this ECU family.

Available operations
DPF Delete
Software deactivation of the diesel particulate filter (DPF/FAP) functions and fault codes.
View →Stage 1 Remap
Software that optimises the engine's power and torque maps within safe limits.
View →EGR Delete
Software deactivation of the exhaust gas recirculation (EGR) valve control and fault codes.
View →Speed Limiter (Vmax) Removal
Removing the factory top-speed limiter from the software.
View →Swirl Flap Delete
Software deactivation of the intake manifold swirl flaps.
View →DTC / Fault Code Removal
Switching off selected diagnostic trouble codes (DTC) in the ECU software.
View →Stage 2 Remap
Advanced software matched to hardware upgrades such as a sport exhaust or induction kit.
View →Stage 3 Remap
Bespoke project software for major hardware changes such as a hybrid turbo.
View →Lambda / O2 Sensor Delete
Software deactivation of the oxygen (lambda) sensor monitoring.
View →Decat / Catalyst Delete
Software deactivation of catalyst monitoring and related codes.
View →Immobiliser (Immo) Solution
Software solution for no-start issues caused by the immobiliser.
View →MJD8 (ALL) chip tuning and remap solutions
The Marelli MJD8 (ALL) is an engine control unit used in cars from makes such as Fiat, Opel and Lancia. Prime Chiptuning always builds MJD8 (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, EGR Delete, Speed Limiter (Vmax) Removal, Swirl Flap Delete and DTC / Fault Code 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 MJD8 (ALL) remap is done
- The MJD8 (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 MJD8 (ALL)
Our service points tune the MJD8 (ALL) for each vehicle individually, with support after delivery. Workshops with their own tools can order MJD8 (ALL) files on the ECU Prime file platform.
Are you a tuner or dealer?
Verified Stage 1, DPF, EGR and AdBlue files for the MARELLI MJD8 (ALL) are available on the EcuPrime file service: upload your original file and compatibility is measured in seconds.
MARELLI MJD8 (ALL) files on EcuPrime →Notify me when a new MARELLI MJD8 (ALL) solution is released
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