Trucks / HGV · ECU Remapping
Mercedes Trucks Actros OM502 - 503 (Euro 3) 503 hp Tuning (2001–2005)
Factory specification and Stage 1 remap gains for the Mercedes Trucks Actros OM502 - 503 (Euro 3) 503 hp (2001–2005). A Stage 1 calibration adds 67 BHP and 400 Nm — software only, no hardware modifications required.
| Measure | Original | Stage 1 | Stage 2 |
|---|---|---|---|
Power BHP | 503 | 570 +67 BHP · +13% | 580 +77 BHP · +15% |
Torque Nm | 2400 | 2800 +400 Nm · +17% | 2820 +420 Nm · +18% |
+67 BHP
Stage 1 power gain
+400 Nm
Stage 1 torque gain
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: 503 bhp · 2400 Nm (peak)
Stage 1: 570 bhp · 2799.4 Nm (peak)
Stage 2: 580 bhp · 2820 Nm (peak)
Tuning tool compatibility
This ECU was not found in the manufacturer compatibility databases we cross-reference.
AutoTuner
Not listed
Not found in this manufacturer's published data — ask us, coverage updates frequently.
Alientech KESS3
Not listed
Not found in this manufacturer's published data — ask us, coverage updates frequently.
Magicmotorsport FLEX
Not listed
Not found in this manufacturer's published data — ask us, coverage updates frequently.
Dimsport New Genius / New Trasdata
Not listed
Not found in this manufacturer's published 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
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Tell us your truck and registration — we'll confirm support and the exact expected gains for your engine before any work begins.