Variant 1
ECU- Catalog engine
- 1800 180HP
- Controller brand
- SIEMENS
- ECU
- SIMOS12.1
- Stock power
- 180 HP
- SW upgrade
- 8V0906264E_0003
- Calibration
- 8V0906264E_0003
SEAT · SIMOS12.1 ECU · petrol
SEAT LEON SIMOS12.1 tuning files
Tuning file coverage for the SEAT LEON running the SIMOS12.1 ECU. Stock output across the matched variants spans 180–180 HP. Petrol calibration here is about crisp response and a result that holds up day to day. Your file is built against the exact ECU software on the car, then operator-verified.
Available solutions
Solutions that apply to the SIMOS12.1 on this petrol platform. The exact set depends on the specific engine and software version.
Engine variants & ECU software
1 distinct variant for the SEAT LEON on the SIMOS12.1 ECU. Reference the engine and controller software when you upload.
Related vehicles
Other vehicles built on the SIMOS12.1 controller or the same engine — handy when a platform spans several models and makes.
Questions, answered.
Which tuning solutions are available for the SEAT LEON on the SIMOS12.1?
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 SIMOS12.1 ECU software on this model?
Yes — the SEAT LEON on the SIMOS12.1 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.