Considering an ECU remap for your McLaren 650S 3.8 V8 650hp? A Stage 1 remap can take this All petrol engine from 650 BHP to 700 BHP and from 678 Nm to 740 Nm of torque (naturally aspirated). This engine scores 3.5/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your McLaren 650S can achieve.
Comparisons are calculated from our own recorded Stage 1 figures.
The McLaren 650S 3.8 V8 650hp is a 3.8L naturally aspirated petrol engine producing 650 BHP and 678 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 700 BHP and 740 Nm — a gain of around 50 BHP (8%) and 62 Nm (9%).
This engine has limited 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 limited, based on the percentage gain available from the factory output.
Considerations: Naturally aspirated engine: gains are usually limited; results vary widely.. High tuned torque: check transmission torque capacity and service history.
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.
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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 before proceeding.
