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Agriculture · Harvester T Series

John Deere T550i tuning file

6.8 L · 224 kW / 300 hp · ECU Phoenix L21-L22-L23

Stage 1, DTC and emission-related tuning files for the John Deere T550i, read and written with KESS3. Exclusively for dealers and tuning professionals.

Machine data

Brand
John Deere
Model
T550i
Series / type
Harvester T Series
Division
Agriculture
Engine
6.8 L
Rated power
224 kW · 305 PS · 300 hp
Emission stage
–
ECU
Phoenix L21-L22-L23

KESS3 / Powergate

YearVersionECUKESS3PowergateFunctions
2011T550i 6.8L I6Phoenix L21-L22-L23OBD–Read

Source: Alientech KESS3 / Powergate vehicle list, 14.10.2026. How KESS3 is used on off-highway machines.

New Genius / New Trasdata

Not listed in the Dimsport application list (06.10.2026).

Other tools

AutoTuner
ECU family not listedMatched by ECU name against the AutoTuner compatibility list of 13.10.2026. Support differs by brand, so check before quoting. AutoTuner on agricultural and construction machines.

Machine or brand not listed?

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