Agricultural · ECU Remapping
John Deere FORESTRY FELLER BUNCHER 843K 6.8l 246 hp Tuning (2014–)
Factory specification and Stage 1 remap gains for the John Deere FORESTRY FELLER BUNCHER 843K 6.8l 246 hp (2014–). A Stage 1 calibration adds 24 BHP and 83 Nm — software only, no hardware modifications required.
| Measure | Original | Stage 1 |
|---|---|---|
Power BHP | 246 | 270Estimated +24 BHP · +10% |
Torque Nm | 787Estimated | 870 +83 Nm · +11% |
+24 BHP
Stage 1 power gain (estimated)
+83 Nm
Stage 1 torque gain (estimated)
Estimated figures are based on engine, ECU and comparable application data. Actual results can vary depending on software version, machine condition and configuration.
Rolling road
Dyno Graph
Power (BHP, solid) and torque (Nm, dashed) across engine speed (RPM). Peak figures match our database exactly.
Hover / touch the graph
Stock: 246 bhp · 787 Nm (peak)
Stage 1: 270 bhp · 870 Nm (peak)
Tuning tool compatibility
This ECU was not found in the manufacturer compatibility databases we cross-reference.
AutoTuner
Not listed in this manufacturer's data — ask us, coverage updates frequently.
Alientech KESS3
Not listed in this manufacturer's data — ask us, coverage updates frequently.
Magicmotorsport FLEX
Not listed in this manufacturer's data — ask us, coverage updates frequently.
Dimsport New Genius / New Trasdata
Not listed in this manufacturer's data — ask us, coverage updates frequently.
Existing customers upload their ECU file via the Regal Tuning File Portal. New to Regal? Request a quote first.
20+ years of ECU calibration
Ready to unlock your John Deere FORESTRY FELLER BUNCHER's real performance?
Tell us your machine and registration — we'll confirm support and the exact expected gains for your engine before any work begins.