Mercedes S 400 CDI 279(+99)
ECU Remapping Fife
Mercedes S 400 CDI 279(+99) in Fife. Standard and remapped figures for this exact engine.

- Fully dyno tested remaps
- 30 day money back guarantee
- Lifetime software warranty
- UK-wide local network
Remap stats
Mercedes S 400 CDI 279(+99): standard vs remapped
Diesel engine. Indicative stage 1 figures, fully dyno tested.
Power
+27 bhp · +10%- Standard279 bhp
- Remapped306 bhp
Torque
+37 Nm · +9%- Standard400 Nm
- Remapped437 Nm
Tuning figures are indicative estimates, not guaranteed results. Actual results depend on the condition of the vehicle.
Prices from £130
Fully dyno tested | 30 day money back guarantee | Lifetime software warranty
Standard, the Mercedes S 400 CDI 279(+99) makes 279 bhp and 400 Nm. With Remap Experts in Fife it moves to 306 bhp and 437 Nm, which adds 27 bhp (10%) and 37 Nm (9%).
Figures are indicative stage 1 estimates for a healthy diesel Mercedes S-class; results vary with the condition of the vehicle.
Mercedes S 400 CDI 279(+99) remap figures
- Fuel: Diesel
- Standard power: 279 bhp, remapped: 306 bhp (+27 bhp, +10%)
- Standard torque: 400 Nm, remapped: 437 Nm (+37 Nm, +9%)
- Service: stage 1 ECU remap, fully dyno tested
Diesel Mercedes S-class: what changes with a remap
Diesel engines respond strongly to remapping because the ECU controls injection quantity, injection timing and turbo boost pressure. Re-calibrating those maps typically brings the biggest improvement in mid-range torque, which is what you feel when overtaking or towing.
For reference, CDI is the Mercedes-Benz name for its common-rail diesel engines.
Mercedes S 400 CDI 279(+99) against other S-class engines
Ranked by power gain against the other diesel S-class engines (7 in total), the S 400 CDI 279(+99) is 7th, 10 bhp below the S-class diesel average of 37 bhp.
Across our whole catalogue the average diesel remap adds 34 bhp and 73 Nm, so this engine's 27 bhp and 37 Nm sits below that benchmark.
Book performance tuning for your Mercedes S-class in Fife
Whether you live in Fife or nearby, the Fife Remap Experts site is your local route to a quote. We regularly work with drivers in Glenrothes, Rosyth, Methil, Kirkcaldy and Dunfermline and nearby areas of Scotland.
You get a fully dyno tested remap, a 30 day money back guarantee and a lifetime software warranty with every job. Get your quote today on 0800 779 7864.
If you are closer to Edinburgh, Glasgow and Scotland, those neighbouring Remap Experts sites can help too.

Get a quote for your Mercedes S 400 CDI 279(+99)
Send your registration and we will confirm the exact remap, the price and the next available slot.
Included
What we can do for your Mercedes S-class
Stage 1 ECU remap
Add power and torque and improve driveability. Software only, tailored to your engine.
ECU repair and testing
Is your engine control unit playing up? We can arrange testing and repair, and source replacement ECUs.
DPF and EGR fault repair
Persistent DPF or EGR errors diagnosed and resolved in accordance with all current road-legal standards.
Engine carbon cleaning
Fault finding and carbon cleaning for the inside of your engine, typically completed in a couple of hours.
Same model
Other S-class engines
- Mercedes S 300 TD 177(-99)diesel
- Mercedes S 300(-99)petrol
- Mercedes S 320 224 BIS 98(-99)petrol
- Mercedes S 320 224(+99)petrol
- Mercedes S 320 CDI 197(+99)diesel
- Mercedes S 320 CDI 204(+99)diesel
- Mercedes S 350 245(+99)petrol
- Mercedes S 350 TD(-99)diesel
- Mercedes S 430 279 BIS 98(-99)petrol
- Mercedes S 430 279(+99)petrol
- Mercedes S 500 306(+99)petrol
- Mercedes S 55 AMG 612(+99)petrol
From quote to remapped in four steps
No jargon and no pressure. Here is exactly what happens.
- 01
Find your vehicle
Choose your make, model and engine to see the standard and remapped power and torque for your car.
- 02
Request a quote
Send your details and we contact you by SMS or call back with a quote. No obligation.
- 03
Book with your local site
Your local Remap Experts site arranges the remap and answers any questions about your car.
- 04
Remapped and dyno tested
Your remap is fully dyno tested, with a 30 day money back guarantee and a lifetime software warranty.
Everything you need to know
Plain-English guides to how remapping works, what it does and what to check first.
- 6 min read
What is ECU remapping?
The engine control unit, what a remap changes, and who it suits.
Read guide - 5 min read
The benefits of ECU remapping
More torque, better driveability and the potential for better economy.
Read guide - 6 min read
How ECU remapping works, step by step
From reading the original software to the dyno test.
Read guide