Variant 1
ECU- Catalog engine
- 9000 260HP
- Engine code
- 6090RW415
- Controller brand
- PHOENIX
- ECU
- L21
- Stock power
- 260 HP
- ECU SW
- 00001BC91D6E02
- ECU HW
- 000018FF013101
- SW upgrade
- 00001E811D6E03
- Calibration
- 00001E811D6E03
JOHN DEERE · L21 ECU
JOHN DEERE 8260 L21 tuning files
Everything we work with on the JOHN DEERE 8260 fitted with the L21. Stock output across the matched variants spans 204–260 HP. 2 distinct variants are catalogued here. Stage 1 and Stage 2 are the safe starting points for this platform. Every file is matched to the exact calibration on your vehicle and signed off by an operator.
Available solutions
Solutions that apply to the L21 on this vehicle platform. The exact set depends on the specific engine and software version.
Engine variants & ECU software
2 distinct variants for the JOHN DEERE 8260 on the L21 ECU. Reference the engine and controller software when you upload.
Variant 2
ECU- Catalog engine
- 8900 204HP
- Engine code
- 6090RW415
- Controller brand
- PHOENIX
- ECU
- L21
- Stock power
- 204 HP
- ECU SW
- SW60596M
- ECU HW
- RE539229
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 8260 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 8260 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.