Mercedes-Benz GTS AMG 2015> 4.0 V8 Bi-Turbo 503bhp remap figures
Thinking of remapping a Mercedes-Benz GTS AMG 4.0 V8 Bi-Turbo 503bhp? The standard car makes 503bhp and 651Nm; with a Stage 1 remap from our Leicester workshop we expect around 580bhp and 896Nm, up to +77bhp and +245Nm.
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 | 503 bhp | 580 bhp | +77 bhp |
| Torque | 651 Nm | 896 Nm | +245 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 503 bhp | 651 Nm | |
| Stage 1Maximum software-only performance | 580 bhp | 896 Nm | +77 bhp +245 Nm |
| Stage 1 EcoPerformance with economy in mind | 561 bhp | 876 Nm | +58 bhp +225 Nm |
| Eco mapEconomy first | 555 bhp | 864 Nm | +52 bhp +213 Nm |
Who is the Stage 1 map for?
- Drivers who want a noticeably quicker car from a software-only change, with no new parts.
- Daily drivers who want stronger mid-range pull and a sharper throttle.
- Anyone who wants the biggest gain we list without fitting hardware.
What this means for your GTS AMG
Turbocharged petrol engines respond well to calibration changes: boost and timing are the main levers, and the result is a flatter, stronger torque curve as well as a higher peak.
Engine management is by a Bosch MED17.7.1 unit. Newer ECUs often protect their software, so we read the exact unit and version on the car before confirming the figures on this page.
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 GTS AMG 4.0 V8 Bi-Turbo 503bhp?
We expect 580bhp and 896Nm against 503bhp and 651Nm as standard: up to +77bhp and +245Nm. 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 GTS AMG 4.0 V8 Bi-Turbo 503bhp?
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: 561bhp and 876Nm expected. The Eco map is economy first: 555bhp and 864Nm. Both still sit above the standard 503bhp and 651Nm.
Do I need to tell my insurer about a remap?
Yes. A remap is a modification, so you should declare it to your insurer.
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Other petrol variants
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