Variant 1
ECU- Catalog engine
- 900 TURBO 85HP
- Controller brand
- MAGNETI MARELLI
- ECU
- MM8GSF
- Stock power
- 85 HP
- ECU SW
- 3AS27ES4
- ECU HW
- MM8GSFHW521
- SW upgrade
- 51903129
- Calibration
- MM8GSFHW521_3AS27ES4_51903129
FIAT · MM8GSF ECU
FIAT 500 MM8GSF tuning files
Everything we work with on the FIAT 500 fitted with the MM8GSF. Across the matched variants stock power runs from 85 to 85 HP. 6 distinct variants are catalogued here. Stage 1 and Stage 2 are the safe starting points for this platform. Every file is matched to the exact calibration on your vehicle and signed off by an operator.
Available solutions
Applicable work for the MM8GSF on this vehicle. The available set firms up once the exact engine and software are known.
Engine variants & ECU software
6 distinct variants for the FIAT 500 on the MM8GSF ECU. Reference the engine and controller software when you upload.
Variant 2
ECU- Catalog engine
- 900 TURBO 85HP
- Controller brand
- MAGNETI MARELLI
- ECU
- MM8GSF
- Stock power
- 85 HP
- ECU SW
- 3AS23ES3
- ECU HW
- MM8GSFHW521
- SW upgrade
- 51896777
- Calibration
- MM8GSFHW521_3AS23ES3_51896777
Variant 3
ECU- Catalog engine
- 900 TURBO 85HP
- Controller brand
- MAGNETI MARELLI
- ECU
- MM8GSF
- Stock power
- 85 HP
- ECU SW
- 3L136ES5
- ECU HW
- MM8GSFHW525
- SW upgrade
- 51910520
- Calibration
- MM8GSFHW525_3L136ES5_51910520
Variant 4
ECU- Catalog engine
- 900 TURBO 85HP
- Controller brand
- MAGNETI MARELLI
- ECU
- MM8GSF
- Stock power
- 85 HP
- ECU SW
- 3L136ET5
- ECU HW
- MM8GSFHW525
- SW upgrade
- 51910521
- Calibration
- MM8GSFHW525_3L136ET5_51910521
Variant 5
ECU- Catalog engine
- 900 Twin Air Turbo 85HP
- Controller brand
- MAGNETI MARELLI
- ECU
- MM8GSF
- Stock power
- 85 HP
- ECU SW
- 3L163ES7
- ECU HW
- MM8GSFHW525
- SW upgrade
- 51958125
- Calibration
- MM8GSFHW525_3L163ES7_51958125
Variant 6
ECU- Catalog engine
- 900 Twin Air Turbo 85HP
- Controller brand
- MAGNETI MARELLI
- ECU
- MM8GSF
- Stock power
- 85 HP
- ECU SW
- 3L163ET7
- ECU HW
- MM8GSFHW525
- SW upgrade
- 51935078
- Calibration
- MM8GSFHW525_3L163ET7_51935078
Related vehicles
Other vehicles built on the MM8GSF controller or the same engine — handy when a platform spans several models and makes.
Questions, answered.
Which tuning solutions are available for the FIAT 500 on the MM8GSF?
Stage 1, Stage 2. The exact set depends on the specific engine and software version.
Do you cover the MM8GSF ECU software on this model?
Yes — the FIAT 500 on the MM8GSF ECU is part of the catalog. Upload your original file and it is matched to the right calibration before any work is done.
How is the file delivered?
Through the TuningBay workflow with operator validation and one safe, sensible result per job. Files we deliver, we stand behind.