Iveco Stralis 2007> 7.8l S31 310bhp remap figures
Stock, this 2007> Iveco Stralis diesel (7.8L) produces 310bhp and 1300Nm. Our expected figures for a Stage 1 remap are 365bhp and 1442Nm, an expected gain of up to 55bhp and 142Nm.
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 | 310 bhp | 365 bhp | +55 bhp |
| Torque | 1300 Nm | 1442 Nm | +142 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 310 bhp | 1300 Nm | |
| Stage 1Maximum software-only performance | 365 bhp | 1442 Nm | +55 bhp +142 Nm |
| Stage 1 EcoPerformance with economy in mind | 351 bhp | 1431 Nm | +41 bhp +131 Nm |
| Eco mapEconomy first | 347 bhp | 1424 Nm | +37 bhp +124 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 Stralis
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 Bosch EDC7U31 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 questions
How much power does the Stage 1 map give the Iveco Stralis 7.8l S31 310bhp?
We expect 365bhp and 1442Nm against 310bhp and 1300Nm as standard: up to +55bhp and +142Nm. 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 Iveco Stralis 7.8l S31 310bhp?
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: 351bhp and 1431Nm expected. The Eco map is economy first: 347bhp and 1424Nm. Both still sit above the standard 310bhp and 1300Nm.
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 Iveco Stralis figures
Other diesel variants
- 7.8l S33 330bhp 2007>
- 7.8l S27 273bhp 2001-2007
- 7.8l S35 350bhp 2001-2007
- 7.8l S36 360bhp 2007>
- 10.3l S40 400bhp 2001-2007
- 10.3l S42 420bhp 2007>
- 10.3l S45 450bhp 2007>
- 12.9l S48 480bhp 2001-2007
- 12.9l S50 500bhp 2007>
- 12.9l S54 540bhp 2001-2007
All diesel Stralis variants · Stralis 2001> overview · All Iveco figures