Trucks / HGV · ECU Remapping
Mercedes Trucks Atego OM906 - 256 (Euro 4/5) 256 hp Tuning (2004–)
Factory specification and Stage 1 remap gains for the Mercedes Trucks Atego OM906 - 256 (Euro 4/5) 256 hp (2004–). A Stage 1 calibration adds 44 BHP and 155 Nm — software only, no hardware modifications required.
| Measure | Original | Stage 1 | Stage 2 |
|---|---|---|---|
Power BHP | 256 | 300 +44 BHP · +17% | 310 +54 BHP · +21% |
Torque Nm | 970 | 1125 +155 Nm · +16% | 1145 +175 Nm · +18% |
+44 BHP
Stage 1 power gain
+155 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: 256 bhp · 970 Nm (peak)
Stage 1: 300 bhp · 1125 Nm (peak)
Stage 2: 310 bhp · 1145 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
Ready to unlock your Mercedes Trucks Atego's real performance?
Tell us your truck and registration — we'll confirm support and the exact expected gains for your engine before any work begins.