JOHN DEERE · L21 ECU

JOHN DEERE 8360 L21 tuning files

Here is what the catalog holds for the JOHN DEERE 8360 on the L21. The matched variants sit between 370 and 370 HP from the factory. For this platform the dependable path begins with Stage 1 and Stage 2. Each file is tied to the precise software on your car and checked before it goes out.

Upload your file →All 8360 coverage

Available solutions

Solutions that apply to the L21 on this vehicle platform. The exact set depends on the specific engine and software version.

Stage 1 Stage 2

Engine variants & ECU software

2 distinct variants for the JOHN DEERE 8360 on the L21 ECU. Reference the engine and controller software when you upload.

Variant 1

ECU

Catalog engine: 9000 370HP
Controller brand: PHOENIX
ECU: L21
Stock power: 370 HP

Variant 2

ECU

Catalog engine: 9000 370HP
Engine code: 6090RW416
Controller brand: PHOENIX
ECU: L21
Stock power: 370 HP
ECU SW: SW62340B
ECU HW: RE566890

Related vehicles

Other vehicles built on the L21 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 8360 on the L21?

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

Do you cover the L21 ECU software on this model?

Yes — the JOHN DEERE 8360 on the L21 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.