Mercedes S 430 279(+99)
ECU Remapping
Mercedes S 430 279(+99). 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 430 279(+99): standard vs remapped
Petrol 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
Owners of the Mercedes S 430 279(+99) across the UK can expect a stage 1 remap to take it from 279 to 306 bhp and from 400 to 437 Nm, an extra 27 bhp (10%) and 37 Nm (9%).
The figures above are estimates for a standard, well-maintained Mercedes S-class petrol; they are not a guarantee of any particular result.
Mercedes S 430 279(+99) power and torque after remapping
- Fuel: Petrol
- 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
How ECU remapping works on a petrol Mercedes S-class
With a petrol engine the remap works through the ECU's ignition, fuelling and turbo boost tables. Re-calibrating them within safe limits releases power that is already there, rather than adding anything to the engine.
How the Mercedes S 430 279(+99) compares
Among the 16 petrol S-class engines we have figures for, the S 430 279(+99) ranks 8th for power gain, 5 bhp below the S-class petrol average of 32 bhp.
Across our whole catalogue the average petrol remap adds 27 bhp and 51 Nm, so this engine's 27 bhp and 37 Nm sits at or above that benchmark.
Mercedes S-class ECU tuning
Remap Experts is a UK network of local remapping sites. Use Find a Local Tuner to reach your nearest site and get an exact quote.
Each remap is dyno tested before it is signed off, and is protected by a 30 day money back guarantee and a lifetime software warranty. Ask for a quote online or by phone.

Ready for ECU remapping on your Mercedes S-class?
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 400 CDI 279(+99)diesel
- Mercedes S 430 279 BIS 98(-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