Variant 1
ECU- Catalog engine
- 900 TURBO 85HP
- Controller brand
- MAGNETI MARELLI
- ECU
- 3AS21ES33
- Stock power
- 85 HP
- ECU SW
- 3AS21ES33
- ECU HW
- 51896757
- Calibration
- AS21ES33
FIAT · 3AS21ES33 ECU
FIAT 500 3AS21ES33 tuning files
Here is what the catalog holds for the FIAT 500 on the 3AS21ES33. Stock output across the matched variants spans 85–85 HP. 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
What we can run on the 3AS21ES33 for this vehicle — the precise options narrow down by engine and software version.
Engine variants & ECU software
1 distinct variant for the FIAT 500 on the 3AS21ES33 ECU. Reference the engine and controller software when you upload.
Related vehicles
Other vehicles built on the 3AS21ES33 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 3AS21ES33?
Stage 1, Stage 2. The exact set depends on the specific engine and software version.
Do you cover the 3AS21ES33 ECU software on this model?
Yes — the FIAT 500 on the 3AS21ES33 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.