Mercedes-Benz Sl R231 2012 remap
Petrol · Flash via OBD · Figures published for this engine · Remote remap available UK-wide from £199
Is a remap worth it on the Mercedes-Benz Sl R231 2012?
A worthwhile remap. The gain is clearly felt on the road, especially in the mid-range where the torque increase lands.
What each stage needs
| Stage | Power | Torque | Hardware |
|---|---|---|---|
| Standard | 361 bhp | 500 Nm | None |
| Stage 1 | 444 bhp | 698 Nm | Software only |
Risk on this engine: medium
- Significant 23% gain: boost and fuelling pushed beyond factory settings.
- Torque rises by 198 Nm (40%): elevated drivetrain and clutch stress.
- Naturally aspirated: lower mechanical risk. Gains from timing and fuelling optimisation.
How to keep the risk down
- Check intercooler efficiency before tuning.
- Inspect clutch condition before tuning.
- Use RON 97+ fuel to maximise timing advance.
- Keep a copy of the original ECU file before flashing.
Remote remap for your Mercedes-Benz Sl R231 2012: Stage 1 from £199
No trip to a workshop. ORCA Remapping, part of the same company as BeakCheck, tunes your car's own ECU file and sends it back, UK-wide.
| Service | Price | Needs |
|---|---|---|
| Stage 1 Remote | £199 | Standard car, software only. 444 bhp and 698 Nm on this engine. |
| Diagnostic file analysis | £49 | Read-only check of the existing file: detects a previous tune before you buy a used car. |
Paid up front on orcahq.co.uk once ORCA confirms your engine and tool. Or ask first, no obligation:
Questions owners ask
How much power does a Mercedes-Benz Sl R231 2012 gain from a remap?
A Stage 1 remap adds about 83 bhp and 198 Nm, taking it from 361 to 444 bhp. Stage 1 is software only.
Is it safe to remap a Mercedes-Benz Sl R231 2012?
Remap risk is rated medium (5/10). Significant 23% gain: boost and fuelling pushed beyond factory settings. Check intercooler efficiency before tuning.
Does a remap affect the MOT or insurance on a Mercedes-Benz Sl R231 2012?
A remap does not affect the MOT test, which does not read the ECU calibration. It is a modification for insurance purposes and must be declared to your insurer; most mainstream insurers accept a declared Stage 1 with a premium adjustment.
How is a Mercedes-Benz Sl R231 2012 remapped?
Through the OBD diagnostic port in the cabin. The original file is read and saved first, then the modified calibration is written. Typically under two hours.
Check your exact car by registration
Free DVLA and MOT check, plus the remap verdict for the engine actually fitted to your car.
Other Mercedes-Benz engines
Remapping guides
Power figures are published Stage 1 and Stage 2 results for this engine and are a guide. Actual gains depend on the car's condition, fuel and the map used. BeakCheck and ORCA Remapping are trading names of Bloor Engineering Ltd.