Agricultural · ECU Remapping
John Deere FORESTRY FELLER BUNCHER 843L 6.8l 273 hp Tuning (2016–)
Factory specification and Stage 1 remap gains for the John Deere FORESTRY FELLER BUNCHER 843L 6.8l 273 hp (2016–). A Stage 1 calibration adds 22 BHP and 67 Nm — software only, no hardware modifications required.
| Measure | Original | Stage 1 |
|---|---|---|
Power BHP | 273 | 295Estimated +22 BHP · +8% |
Torque Nm | 873Estimated | 940 +67 Nm · +8% |
+22 BHP
Stage 1 power gain (estimated)
+67 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: 273 bhp · 873 Nm (peak)
Stage 1: 295 bhp · 940 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'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.