Mercedes-Benz SL (R231) 2014> 400 328bhp remap figures
Stock, this 2014> Mercedes-Benz SL petrol (3.0L) produces 328bhp and 480Nm. Our expected figures for a Stage 1 remap are 405bhp and 579Nm, an expected gain of up to 77bhp and 99Nm.
Choose your map
Stage 1 remap figures
A Stage 1 remap is a software-only change to the ECU on an otherwise standard car. It needs no extra parts, which makes it the usual starting point.
| Stock | Vanguard expected | Expected gain, up to | |
|---|---|---|---|
| Power | 328 bhp | 405 bhp | +77 bhp |
| Torque | 480 Nm | 579 Nm | +99 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 328 bhp | 480 Nm | |
| Stage 1Maximum software-only performance | 405 bhp | 579 Nm | +77 bhp +99 Nm |
| Stage 1 EcoPerformance with economy in mind | 386 bhp | 571 Nm | +58 bhp +91 Nm |
| Eco mapEconomy first | 380 bhp | 566 Nm | +52 bhp +86 Nm |
Who is the Stage 1 map for?
- Drivers who want a sharper throttle and a small, honest gain from software alone.
- Owners who would rather keep the car standard in every other way.
- Anyone who wants the fullest software-only map for this engine, accepting that the gain is modest without a turbocharger.
What this means for your SL
Without a turbocharger the improvement comes from ignition, fuelling and throttle mapping rather than boost, so expect a smaller but still noticeable change in response.
This car is listed with a Bosch MED17.7 engine control unit. We read the ECU on your car and compare it with the software listed here before any work starts, so you know what to expect before you commit.
We remap at our Belgrave Gate workshop in Leicester, or at your home or work within 30 miles, and every job starts with a diagnostic check.
Please note: these are expected figures, not guarantees. Real results vary with the condition of the vehicle, the ECU software version, fuel quality and the hardware fitted. Some options - including Stage 2 and anything that needs extra hardware - are for off-road or competition use only. We check every vehicle first and confirm what is achievable before any work starts.
Figures reviewed 22 October 2026.
Stage 1 questions
How much power does the Stage 1 map give the Mercedes-Benz SL 400 328bhp?
We expect 405bhp and 579Nm against 328bhp and 480Nm as standard: up to +77bhp and +99Nm. These are expected figures, and we confirm what is achievable on your own car after a diagnostic check.
Does a Stage 1 remap need any extra parts on the Mercedes-Benz SL 400 328bhp?
No. Stage 1 is a software-only change to the ECU on an otherwise standard car.
Is there a gentler map than Stage 1 for this engine?
Yes, two. Stage 1 Eco is performance with economy in mind: 386bhp and 571Nm expected. The Eco map is economy first: 380bhp and 566Nm. Both still sit above the standard 328bhp and 480Nm.
Do I need to tell my insurer about a remap?
Yes. A remap is a modification, so you should declare it to your insurer.
More Mercedes-Benz SL figures
Other petrol variants
- 400 361bhp 2016>
- SL500 BiTurbo 428bhp 2012>
- 500 448bhp 2014>
- SL63 AMG BiTurbo 537bhp 2012>
- SL63 AMG BiTurbo PP 577bhp 2012>
- SL65 AMG 621bhp 2012>
All petrol SL (R231) variants · SL (R231) 2012> overview · All Mercedes-Benz figures