Data under review — The figures shown for this engine variant are currently being verified. They may be updated as we refine our data.
BHP+200 hp (32%)
Standard
620 hp
Tuned
820 hp
Torque+250 Nm (40%)
Standard
630 Nm
Tuned
880 Nm
Suitability
Good (6.5/10)Gains Profile
BalancedHeadroom
HighMcLaren GT 4.0 V8 620hp ECU Remapping
Considering an ECU remap for your McLaren GT 4.0 V8 620hp? A Stage 1 remap can take this 2019 -> ... petrol engine from 620 BHP to 820 BHP and from 630 Nm to 880 Nm of torque (naturally aspirated). This engine scores 6.5/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your McLaren GT can achieve.
How this engine compares
- 99%of the 9,842 engines we hold gain data for see a smaller power increase
- 96%of engines with torque data see a smaller torque increase
Comparisons are calculated from our own recorded Stage 1 figures.
Assessment
The McLaren GT 4.0 V8 620hp is a 4.0L naturally aspirated petrol engine producing 620 BHP and 630 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 820 BHP and 880 Nm — a gain of around 200 BHP (32%) and 250 Nm (40%).
This engine has moderate remap suitability, with a balanced spread of gains across both power and torque — providing a noticeable improvement across the rev range. The tuning headroom is classified as high, based on the percentage gain available from the factory output.
Considerations: Naturally aspirated engine: gains are usually limited; results vary widely.. Unusually high gain for NA engine: treat as an estimate and verify against the exact engine variant.. High tuned torque: check transmission torque capacity and service history.. Large torque increase: drivetrain condition (clutch/gearbox) becomes more important at this level.
All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method. We recommend discussing your specific vehicle with a qualified remap professional.
Considerations
!Naturally aspirated engine: gains are usually limited; results vary widely.
!Unusually high gain for NA engine: treat as an estimate and verify against the exact engine variant.
!High tuned torque: check transmission torque capacity and service history.