McLaren 540C 2016> 3.8 V8 Twin turbo 533bhp remap figures
The McLaren 540C 3.8 V8 Twin turbo 533bhp (2016>) is a petrol 3.8L model making 533bhp and 540Nm as standard. After a Stage 2 ECU remap we expect 638bhp and 649Nm - up to 105bhp and 109Nm more than stock.
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Stage 2 remap figures
Stage 2 builds on Stage 1 with supporting hardware - typically a freer-flowing intake and exhaust or downpipe - and a remap written around those parts. Stage 2 is intended for off-road or competition use.
| Stock | Vanguard expected | Expected gain, up to | |
|---|---|---|---|
| Power | 533 bhp | 638 bhp | +105 bhp |
| Torque | 540 Nm | 649 Nm | +109 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 533 bhp | 540 Nm | |
| Stage 2Extra power with supporting parts | 638 bhp | 649 Nm | +105 bhp +109 Nm |
Who is the Stage 2 map for?
- Owners who have fitted, or plan to fit, supporting parts such as a freer-flowing intake and exhaust.
- Enthusiast, track and competition cars: Stage 2 is intended for off-road or competition use.
- Drivers who accept that a bigger gain means more of the car has to be checked and prepared first.
What Stage 2 needs
Stage 2 is written around supporting hardware. For an engine like this one that is typically a freer-flowing intake, an upgraded intercooler and a less restrictive downpipe or exhaust. We confirm the exact parts for your car before any work starts.
- A diagnostic check and a read of your ECU come first.
- We look at the condition of the parts that will carry the extra power before we quote.
- Stage 2 is intended for off-road or competition use.
What this means for your 540C
On a turbocharged petrol engine a remap adjusts boost, ignition timing and fuelling together, so both power and mid-range torque rise and the car pulls harder out of corners and junctions.
The ECU recorded for this variant is a Bosch ME17.8.3.2. 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 2 questions
How much power does the Stage 2 map give the McLaren 540C 3.8 V8 Twin turbo 533bhp?
We expect 638bhp and 649Nm against 533bhp and 540Nm as standard: up to +105bhp and +109Nm. These are expected figures, and we confirm what is achievable on your own car after a diagnostic check.
What does a Stage 2 remap need on the McLaren 540C 3.8 V8 Twin turbo 533bhp?
Stage 2 assumes supporting hardware. For an engine like this that is typically a freer-flowing intake, an upgraded intercooler and a less restrictive downpipe or exhaust. We confirm the exact parts for your car before any work starts.
Is Stage 2 for road use?
Stage 2 is intended for off-road or competition use. Tell us how the car is used and we will explain what we can and cannot do for it.
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
All petrol 540C variants · 540C 2016> overview · All McLaren figures