Mercedes-Benz Slk R171 2004 2011 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 Slk R171 2004 2011?
A modest but real gain. Worth it for drivability and mid-range pull rather than headline power.
What each stage needs
| Stage | Power | Torque | Hardware |
|---|---|---|---|
| Standard | 268 bhp | 350 Nm | None |
| Stage 1 | 295 bhp | 386 Nm | Software only |
Risk on this engine: low
- Moderate 10% gain: standard remap territory.
- Naturally aspirated: lower mechanical risk. Gains from timing and fuelling optimisation.
How to keep the risk down
- Use RON 97+ fuel to maximise timing advance.
- Keep a copy of the original ECU file before flashing.
Remote remap for your Mercedes-Benz Slk R171 2004 2011: 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. 295 bhp and 386 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 Slk R171 2004 2011 gain from a remap?
A Stage 1 remap adds about 27 bhp and 36 Nm, taking it from 268 to 295 bhp. Stage 1 is software only.
Is it safe to remap a Mercedes-Benz Slk R171 2004 2011?
Remap risk is rated low (2/10). Moderate 10% gain: standard remap territory. Use RON 97+ fuel to maximise timing advance.
Does a remap affect the MOT or insurance on a Mercedes-Benz Slk R171 2004 2011?
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 Slk R171 2004 2011 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.