Agricultural · ECU Remapping
Challenger Mt800 MT865C 18.1L I6 525 hp Tuning (2002–)
Factory specification and Stage 1 remap gains for the Challenger Mt800 MT865C 18.1L I6 525 hp (2002–). A Stage 1 calibration adds 65 BHP and 240 Nm — software only, no hardware modifications required.
| Measure | Original | Stage 1 |
|---|---|---|
Power BHP | 525 | 590Estimated +65 BHP · +12% |
Torque Nm | 1990Estimated | 2230 +240 Nm · +12% |
+65 BHP
Stage 1 power gain (estimated)
+240 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.
Power & torque curves
Illustrative Performance Curve
Illustrative curve generated from published/estimated peak figures. This is not an individual rolling-road test. Power (BHP, solid) and torque (Nm, dashed) across engine speed (RPM); peak figures match the published database values.
Hover / touch the graph
Stock: 525 bhp · 1990 Nm (peak)
Stage 1: 590 bhp · 2230 Nm (peak)
Tuning tool compatibility
This ECU is listed in 4 of 4 manufacturer compatibility databases.
AutoTuner
Supported — ECU family
ECU: EDC17CV41
Alientech KESS3
Supported — ECU family
ECU: EDC17CV41
Magicmotorsport FLEX
Supported — ECU family
ECU: EDC17CV41
Dimsport New Genius / New Trasdata
Supported — ECU family
ECU: EDC17CV41
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 Challenger Mt800'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.