Trucks / HGV · ECU Remapping
DAF LF55 4.5L FR103 140 hp Tuning (2001–present)
Factory specification and Stage 1 remap gains for the DAF LF55 4.5L FR103 140 hp (2001–present). A Stage 1 calibration adds 30 BHP and 87 Nm — software only, no hardware modifications required.
| Measure | Original | Stage 1 |
|---|---|---|
Power BHP | 140 | 170 +30 BHP · +21% |
Torque Nm | 550 | 637 +87 Nm · +16% |
+30 BHP
Stage 1 power gain
+87 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: 140 bhp · 550 Nm (peak)
Stage 1: 170 bhp · 637 Nm (peak)
Tuning tool compatibility
This ECU is listed in 2 of 4 manufacturer compatibility databases.
AutoTuner
Not listed
Not found in this manufacturer's published data — ask us, coverage updates frequently.
Alientech KESS3
Supported — ECU family
ECU: Motorola CM850
Magicmotorsport FLEX
Not listed
Not found in this manufacturer's published data — ask us, coverage updates frequently.
Dimsport New Genius / New Trasdata
Supported — ECU family
ECU: Motorola CM850
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 DAF LF55'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.