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Agriculture · 8R-RT-RX Series

John Deere 8R 370 tuning file (299 kW)

9.0 L · 299 kW / 401 hp · Tier 5 · ECU PHOENIX L40

Stage 1, DTC and emission-related tuning files for the John Deere 8R 370, read and written with New Genius, KESS3. Exclusively for dealers and tuning professionals.

Machine data

Brand
John Deere
Model
8R 370
Series / type
8R-RT-RX Series
Division
Agriculture
Engine
9.0 L
Rated power
299 kW · 407 PS · 401 hp
Emission stage
Tier 5
ECU
PHOENIX L40
Engine code
MJDXL09.0333

KESS3 / Powergate

YearVersionECUKESS3PowergateFunctions
20228R 370 9.0L I6Engine MJDXL09.0333Phoenix L40OBD–Read
20228RT 370 9.0L I6Engine MJDXL09.0333Phoenix L40OBD–Read
20228RX 370 9.0L I6Engine MJDXL09.0333Phoenix L40OBD–Read

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

New Genius / New Trasdata

YearEmission stageECUNew Genius (OBD)New Trasdata
2022Tier 5PHOENIX L40FLASH_0877not listed

Source: Dimsport application list, release 06.10.2026. Emission stages are shortened as in that list.

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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