Variant 1
ECU- Catalog engine
- 1800 8V FLEX 114HP
- Controller brand
- MAGNETI MARELLI
- ECU
- IAW 4SF.GB
- Stock power
- 114 HP
FIAT · IAW 4SF.GB ECU · petrol
FIAT SIENA IAW 4SF.GB tuning files
Everything we work with on the FIAT SIENA fitted with the IAW 4SF.GB. The matched variants sit between 114 and 114 HP from the factory. On this petrol engine the focus is sharper throttle and useful, repeatable gains. Every file is matched to the exact calibration on your vehicle and signed off by an operator.
Available solutions
Solutions that apply to the IAW 4SF.GB on this petrol platform. The exact set depends on the specific engine and software version.
Engine variants & ECU software
1 distinct variant for the FIAT SIENA on the IAW 4SF.GB ECU. Reference the engine and controller software when you upload.
Related vehicles
Other vehicles built on the IAW 4SF.GB controller or the same engine — handy when a platform spans several models and makes.
Questions, answered.
Which tuning solutions are available for the FIAT SIENA on the IAW 4SF.GB?
Stage 1, Stage 2, Swirl Flaps Off, Lambda / O2, OPF/GPF Off. The exact set depends on the specific engine and software version.
Do you cover the IAW 4SF.GB ECU software on this model?
Yes — the FIAT SIENA on the IAW 4SF.GB 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.