DAF LF55 2001> 4.5 ltr FR103 140bhp remap figures
The DAF LF55 4.5 ltr FR103 140bhp (2001>) is a diesel 4.5L model making 140bhp and 551Nm as standard. After a Stage 1 ECU remap we expect 175bhp and 642Nm - up to 35bhp and 91Nm more than stock.
Choose your map
Stage 1 remap figures
A Stage 1 remap is a software-only change to the ECU on an otherwise standard car. It needs no extra parts, which makes it the usual starting point.
| Stock | Vanguard expected | Expected gain, up to | |
|---|---|---|---|
| Power | 140 bhp | 175 bhp | +35 bhp |
| Torque | 551 Nm | 642 Nm | +91 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 140 bhp | 551 Nm | |
| Stage 1Maximum software-only performance | 175 bhp | 642 Nm | +35 bhp +91 Nm |
| Stage 1 EcoPerformance with economy in mind | 166 bhp | 635 Nm | +26 bhp +84 Nm |
| Eco mapEconomy first | 163 bhp | 630 Nm | +23 bhp +79 Nm |
Who is the Stage 1 map for?
- Drivers who want stronger pulling power for overtaking, hills and towing, with no parts to fit.
- Daily and motorway drivers who want the engine to feel less strained at cruising speed.
- Anyone who wants the biggest software-only change we list for this engine.
What this means for your LF55
Diesel remaps work mainly on boost pressure, fuel delivery and torque limiters, which is why the Nm gain is usually the figure you feel in everyday driving, particularly when overtaking or towing.
This car is listed with a Motorola CM850 engine control unit. Older engine management is simpler to work with, but age matters: worn sensors, leaks and tired components can hold back what a remap delivers, which is why we run a diagnostic check first.
We remap at our Belgrave Gate workshop in Leicester, or at your home or work within 30 miles, and every job starts with a diagnostic check.
Please note: these are expected figures, not guarantees. Real results vary with the condition of the vehicle, the ECU software version, fuel quality and the hardware fitted. Some options - including Stage 2 and anything that needs extra hardware - are for off-road or competition use only. We check every vehicle first and confirm what is achievable before any work starts.
Figures reviewed 22 October 2026.
Stage 1 questions
How much power does the Stage 1 map give the DAF LF55 4.5 ltr FR103 140bhp?
We expect 175bhp and 642Nm against 140bhp and 551Nm as standard: up to +35bhp and +91Nm. These are expected figures, and we confirm what is achievable on your own car after a diagnostic check.
Does a Stage 1 remap need any extra parts on the DAF LF55 4.5 ltr FR103 140bhp?
No. Stage 1 is a software-only change to the ECU on an otherwise standard car.
Is there a gentler map than Stage 1 for this engine?
Yes, two. Stage 1 Eco is performance with economy in mind: 166bhp and 635Nm expected. The Eco map is economy first: 163bhp and 630Nm. Both still sit above the standard 140bhp and 551Nm.
Do I need to tell my insurer about a remap?
Yes. A remap is a modification, so you should declare it to your insurer.
More DAF LF55 figures
Other diesel variants
- 4.5 ltr FR118 160bhp 2001>
- 4.5 ltr FR136 180bhp 2001>
- 6.7 ltr GR165 220bhp 2006>
- 6.7 ltr GR184 250bhp 2006>
- 6.7 ltr GR210 286bhp 2006>
All diesel LF55 variants · LF55 2001> overview · All DAF figures