Mercedes SL 300 231
Engine Tuning in London
Mercedes SL 300 231 in London. 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 SL 300 231: standard vs remapped
Petrol engine. Indicative stage 1 figures, fully dyno tested.
Power
+32 bhp · +14%- Standard231 bhp
- Remapped263 bhp
Torque
+36 Nm · +13%- Standard272 Nm
- Remapped308 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 SL 300 231 in London can expect a stage 1 remap to take it from 231 to 263 bhp and from 272 to 308 Nm, an extra 32 bhp (14%) and 36 Nm (13%).
The figures above are estimates for a standard, well-maintained Mercedes SL-class petrol; they are not a guarantee of any particular result.
Mercedes SL 300 231: remap at a glance
- Fuel: Petrol
- Standard power: 231 bhp, remapped: 263 bhp (+32 bhp, +14%)
- Standard torque: 272 Nm, remapped: 308 Nm (+36 Nm, +13%)
- Service: stage 1 ECU remap, fully dyno tested
How engine tuning works on a petrol Mercedes SL-class
Factory petrol calibrations leave margin for poor fuel and hot climates. A remap tunes the ignition, fuelling and boost maps to make better use of that margin, which shows up as livelier throttle response and stronger acceleration.
How the Mercedes SL 300 231 compares
Of the 11 petrol SL-class engines in our data, this one comes 4th for power gain, which is 4 bhp above the SL-class petrol average of 28 bhp.
Across our whole catalogue the average petrol remap adds 27 bhp and 51 Nm, so this engine's 32 bhp and 36 Nm sits at or above that benchmark.
Remapping your Mercedes SL-class in London
Remap Experts London is part of the UK-wide Remap Experts network. We regularly work with drivers in Hounslow, Watford, Sutton, Romford and Enfield and nearby areas of London.
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.
If you are closer to Croydon, Kensingtonandchelsea and Essex, those neighbouring Remap Experts sites can help too.

Ready for engine tuning on your Mercedes SL-class in London?
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 SL-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 SL-class engines
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