Renault Trucks Kerax 2006-2009 7.2l EUR 4 DXi7 320bhp Stage 1 Eco remap figures
The Stage 1 Eco map for the Renault Trucks Kerax 7.2l EUR 4 DXi7 320bhp (2006-2009): 361bhp and 1342Nm expected from a standard 320bhp and 1200Nm, up to +41bhp and +142Nm. It keeps most of the Stage 1 gain (Stage 1 is 375bhp and 1354Nm) and is tuned with economy in mind: the choice if you want the performance and care what each tank costs.
Choose your map
Stage 1 Eco remap figures
Stage 1 Eco is performance with economy in mind. It keeps most of the Stage 1 gain, so the car still pulls well, but the map is shaped for efficient, relaxed driving rather than flat-out output. It is above the standard figures. We don't quote mpg, because economy depends on the car and how it is driven.
| Stock | Vanguard expected | Expected gain, up to | |
|---|---|---|---|
| Power | 320 bhp | 361 bhp | +41 bhp |
| Torque | 1200 Nm | 1342 Nm | +142 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 320 bhp | 1200 Nm | |
| Stage 1Maximum software-only performance | 375 bhp | 1354 Nm | +55 bhp +154 Nm |
| Stage 1 EcoPerformance with economy in mind | 361 bhp | 1342 Nm | +41 bhp +142 Nm |
| Eco mapEconomy first | 357 bhp | 1334 Nm | +37 bhp +134 Nm |
Who is the Stage 1 Eco map for?
- Drivers who want the pull of a remap for overtaking, motorways and towing, with the engine tuned with economy in mind.
- High-mileage drivers who want better performance and a more efficient everyday car in one map.
- Anyone who would otherwise take full Stage 1 but cares what each tank costs.
How Stage 1 Eco compares with Stage 1
Full Stage 1 on this Renault Trucks Kerax is expected to give 375bhp and 1354Nm (+55bhp, +154Nm). The Stage 1 Eco keeps about 75% of that power gain and 92% of the torque gain, so you get 361bhp and 1342Nm: 14bhp less and 12Nm less than Stage 1, with the map shaped for efficient, relaxed driving, so it suits you if you want the pull and care about running costs. Both sit above the standard 320bhp and 1200Nm.
What this means for your Kerax
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.
Engine management is by a TRW EMS2 DXI unit. We read the ECU on your car and compare it with the software listed here before any work starts, so you know what to expect before you commit.
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 Eco questions
How much power does the Stage 1 Eco map give the Renault Trucks Kerax 7.2l EUR 4 DXi7 320bhp?
We expect 361bhp and 1342Nm against 320bhp and 1200Nm as standard: up to +41bhp and +142Nm. These are expected figures, and we confirm what is achievable on your own car after a diagnostic check.
How does Stage 1 Eco differ from Stage 1 on this engine?
Full Stage 1 is expected to give 375bhp and 1354Nm. Stage 1 Eco gives 14bhp less and 12Nm less, in exchange for a map shaped with economy in mind. It still sits above the standard figures.
Is Stage 1 Eco or the Eco map better for me?
Choose Stage 1 Eco if you want the performance (361bhp and 1342Nm) and still care about running costs. Choose the Eco map (357bhp and 1334Nm) if economy matters more than pace.
Will the Stage 1 Eco map save fuel?
It is tuned with economy in mind while keeping most of the Stage 1 performance. We do not quote mpg figures, because economy depends on the car, its condition and how it is driven.
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 Renault Trucks Kerax figures
Other diesel variants
- 9.8l EUR 3 311bhp 2001-2005
- 7.2l EUR 4 DXi7 280bhp 2006-2009
- 11.1l EUR 3 360bhp 2001-2005
- 10.8l EUR 4 DXi11 370bhp 2006-2009
- 9.8l EUR 3 265bhp 2001-2005
- 7.2l EUR 4 DXi7 240bhp 2006-2009
- 10.8l EUR 4 DXi11 410bhp 2006-2009
- 11.1l EUR 3 412bhp 2001-2005
- 10.8l EUR 4 DXi11 450bhp 2006-2009
All diesel Kerax variants · Kerax 2001-2009 overview · All Renault Trucks figures