SEAT · MED17.5.25 ECU · petrol

SEAT LEON MED17.5.25 tuning files

Everything we work with on the SEAT LEON fitted with the MED17.5.25. Stock output across the matched variants spans 125–150 HP. Petrol calibration here is about crisp response and a result that holds up day to day. Every file is matched to the exact calibration on your vehicle and signed off by an operator.

Upload your file →All LEON coverage

Available solutions

What we can run on the MED17.5.25 for this petrol — the precise options narrow down by engine and software version.

Stage 1Stage 2Swirl Flaps OffLambda / O2OPF/GPF Off

Engine variants & ECU software

2 distinct variants for the SEAT LEON on the MED17.5.25 ECU. Reference the engine and controller software when you upload.

Variant 1

ECU
Catalog engine
1400 150HP
Engine code
CZEA
Controller brand
BOSCH
ECU
MED17.5.25
Stock power
150 HP
SW upgrade
04E906027BL_9003
Calibration
04E906027BL_9003

Variant 2

ECU
Catalog engine
1400 125HP
Engine code
CZCA
Controller brand
BOSCH
ECU
MED17.5.25
Stock power
125 HP
SW upgrade
04E906027DA_8231
Calibration
04E906027DA_8231

Related vehicles

Other vehicles built on the MED17.5.25 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 MED17.5.25?

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 MED17.5.25 ECU software on this model?

Yes — the SEAT LEON on the MED17.5.25 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.

SEAT LEON MED17.5.25 ECU Tuning Files | TuningBay