Mercedes S 500 306(+99)
ECU Tuning in Leicester
Mercedes S 500 306(+99) in Leicester. 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 500 306(+99): standard vs remapped
Petrol engine. Indicative stage 1 figures, fully dyno tested.
Power
+30 bhp · +10%- Standard306 bhp
- Remapped336 bhp
Torque
+50 Nm · +11%- Standard460 Nm
- Remapped510 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
A stage 1 remap lifts the Mercedes S 500 306(+99) from 306 bhp to 336 bhp, and from 460 Nm to 510 Nm of torque. That is 30 bhp (10%) more power and 50 Nm (11%) more torque from software alone, available in Leicester.
These are indicative figures for a petrol Mercedes S-class in good health. Your own results depend on the condition of the car.
Mercedes S 500 306(+99) power and torque after remapping
- Fuel: Petrol
- Standard power: 306 bhp, remapped: 336 bhp (+30 bhp, +10%)
- Standard torque: 460 Nm, remapped: 510 Nm (+50 Nm, +11%)
- Service: stage 1 ECU remap, fully dyno tested
What a remap does for 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 500 306(+99) compares
Of the 16 petrol S-class engines in our data, this one comes 6th for power gain, which is 2 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 30 bhp and 50 Nm sits at or above that benchmark.
Mercedes S-class engine remapping in Leicester
Remap Experts has a dedicated Leicester site, so you deal with a local team backed by a national network. We regularly work with drivers in Hamilton, Westcotes, Spinney Hills, Rushey Mead and Evington and nearby areas of the East Midlands.
All our remaps are fully dyno tested, backed by a 30 day money back guarantee and covered by a lifetime software warranty. Request a quote online or call 0800 779 7864.
If you are closer to Nottingham, Northampton and Coventry, those neighbouring Remap Experts sites can help too.

Ready for ECU tuning on your Mercedes S-class in Leicester?
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 430 279(+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