MAN TGA 2004> 18.3 ltr D2840 660bhp remap figures
Thinking of remapping a MAN TGA 18.3 ltr D2840 660bhp? The standard car makes 660bhp and 2699Nm; with a Stage 1 remap from our Leicester workshop we expect around 765bhp and 3138Nm, up to +105bhp and +439Nm.
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 | 660 bhp | 765 bhp | +105 bhp |
| Torque | 2699 Nm | 3138 Nm | +439 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 660 bhp | 2699 Nm | |
| Stage 1Maximum software-only performance | 765 bhp | 3138 Nm | +105 bhp +439 Nm |
| Stage 1 EcoPerformance with economy in mind | 739 bhp | 3103 Nm | +79 bhp +404 Nm |
| Eco mapEconomy first | 730 bhp | 3081 Nm | +70 bhp +382 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 TGA
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.
The ECU recorded for this variant is a Bosch EDC7/C. 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 MAN TGA 18.3 ltr D2840 660bhp?
We expect 765bhp and 3138Nm against 660bhp and 2699Nm as standard: up to +105bhp and +439Nm. 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 MAN TGA 18.3 ltr D2840 660bhp?
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: 739bhp and 3103Nm expected. The Eco map is economy first: 730bhp and 3081Nm. Both still sit above the standard 660bhp and 2699Nm.
Do I need to tell my insurer about a remap?
Yes. A remap is a modification, so you should declare it to your insurer.
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