JOHN DEERE · L14-L15 ECU

JOHN DEERE 3520 L14-L15 tuning files

The JOHN DEERE 3520 on the L14-L15, mapped from stock file to finished result. Across the matched variants stock power runs from 337 to 373 HP. For this platform the dependable path begins with Stage 1 and Stage 2. Your file is built against the exact ECU software on the car, then operator-verified.

Upload your file →All 3520 coverage Custom ECU tuning file service

Available solutions

What we can run on the L14-L15 for this vehicle — the precise options narrow down by engine and software version.

Stage 1 Stage 2

Engine variants & ECU software

5 distinct variants for the JOHN DEERE 3520 on the L14-L15 ECU. Reference the engine and controller software when you upload.

Variant 1

ECU

Catalog engine: 7660 373HP
Controller brand: PHOENIX
ECU: L14-L15
Stock power: 373 HP

Variant 2

ECU

Catalog engine: 9000 342HP
Engine code: 6090HT804
Controller brand: PHOENIX
ECU: L14-L15
Stock power: 342 HP
ECU SW: SW60265F
ECU HW: RE531808

Variant 3

ECU

Catalog engine: 9000 341HP
Engine code: 6090HT804
Controller brand: PHOENIX
ECU: L14-L15
Stock power: 341 HP
ECU SW: SW60265G
ECU HW: RE520953
Calibration: RG6090B005455

Variant 4

ECU

Catalog engine: 9000 337HP
Engine code: 6090HT804
Controller brand: PHOENIX
ECU: L14-L15
Stock power: 337 HP
ECU SW: SW60265J
ECU HW: RE520953

Variant 5

ECU

Catalog engine: 9000 337HP
Engine code: 6090HT804
Controller brand: PHOENIX
ECU: L14-L15
Stock power: 337 HP

Related vehicles

Other vehicles built on the L14-L15 controller or the same engine — handy when a platform spans several models and makes.

Questions, answered.

Which tuning solutions are available for the JOHN DEERE 3520 on the L14-L15?

Stage 1, Stage 2. The exact set depends on the specific engine and software version.

Do you cover the L14-L15 ECU software on this model?

Yes — the JOHN DEERE 3520 on the L14-L15 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.