SEAT · IAW 4HV ECU · petrol

SEAT LEON IAW 4HV tuning files

SEAT LEON on the IAW 4HV: matched, calibrated and delivered with care. The matched variants sit between 80 and 85 HP from the factory. There are 5 distinct variants on file for this combination. On this petrol engine the focus is sharper throttle and useful, repeatable gains. Each file is tied to the precise software on your car and checked before it goes out.

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Available solutions

Solutions that apply to the IAW 4HV on this petrol platform. The exact set depends on the specific engine and software version.

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

Engine variants & ECU software

5 distinct variants for the SEAT LEON on the IAW 4HV ECU. Reference the engine and controller software when you upload.

Variant 1

ECU
Catalog engine
1400 16V 85HP
Controller brand
MAGNETI MARELLI
ECU
IAW 4HV
Stock power
85 HP

Variant 2

ECU
Catalog engine
1400 16V 85HP
Controller brand
MAGNETI MARELLI
ECU
IAW 4HV
Stock power
85 HP
ECU SW
AS2149G

Variant 3

ECU
Catalog engine
1400 85HP
Controller brand
MAGNETI MARELLI
ECU
IAW 4HV
Stock power
85 HP
ECU SW
CGGB

Variant 4

ECU
Catalog engine
1400 80HP
Engine code
BUD
Controller brand
MAGNETI MARELLI
ECU
IAW 4HV
Stock power
80 HP

Variant 5

ECU
Catalog engine
1400 80HP
Controller brand
MAGNETI MARELLI
ECU
IAW 4HV
Stock power
80 HP
Calibration
03C906024K_0891

Related vehicles

Other vehicles built on the IAW 4HV 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 IAW 4HV?

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 4HV ECU software on this model?

Yes — the SEAT LEON on the IAW 4HV 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 IAW 4HV ECU Tuning Files | TuningBay