Mercedes SL 280 204
ECU Remapping
Mercedes SL 280 204. 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 280 204: standard vs remapped
Petrol engine. Indicative stage 1 figures, fully dyno tested.
Power
+18 bhp · +9%- Standard204 bhp
- Remapped222 bhp
Torque
+35 Nm · +13%- Standard270 Nm
- Remapped305 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 SL 280 204 makes 204 bhp and 270 Nm. With Remap Experts across the UK it moves to 222 bhp and 305 Nm, which adds 18 bhp (9%) and 35 Nm (13%).
Figures are indicative stage 1 estimates for a healthy petrol Mercedes SL-class; results vary with the condition of the vehicle.
Mercedes SL 280 204: remap at a glance
- Fuel: Petrol
- Standard power: 204 bhp, remapped: 222 bhp (+18 bhp, +9%)
- Standard torque: 270 Nm, remapped: 305 Nm (+35 Nm, +13%)
- Service: stage 1 ECU remap, fully dyno tested
Petrol Mercedes SL-class: what changes with a remap
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.
Mercedes SL 280 204 against other SL-class engines
Ranked by power gain against the other petrol SL-class engines (11 in total), the SL 280 204 is 9th, 10 bhp below 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 18 bhp and 35 Nm sits below that benchmark.
Book engine remapping for your Mercedes SL-class
Our network covers the whole of the UK through local Remap Experts sites. Find your area to get a quote from a specialist near you.
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.

Ready for ECU remapping on your Mercedes SL-class?
Tell us about your car and we will come back with a quote by SMS or phone.
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