McLaren GT ECU Tuning – Stage 1 & Stage 2

Unleash the full performance potential of your McLaren GT with Momentum Motorsports’ expertly engineered ECU tuning packages. Designed specifically for the M840TE twin-turbo V8, our Stage 1 and Stage 2 calibrations dramatically enhance horsepower, torque, throttle response, and overall driving dynamics—while maintaining safe, reliable operation.

Stage 1 Tune

+145 HP / +105 TQ (Approx.)

Stage 1 delivers a substantial increase in performance with no hardware modifications required. Perfect for owners who want a powerful transformation while keeping all factory components intact.

Features

• No hardware changes required

• +145 HP / +105 TQ gain potential

• Faster turbo spool & sharper throttle response

• Smooth, OEM-like drivability with significantly more power

• Optimized boost, ignition, fuel, and torque mapping

• Top speed limiter removed

Stage 2 Tune

+165 HP / +120 TQ (Approx.)

Stage 2 is designed for drivers seeking the most aggressive, high-output performance the stock turbos can safely deliver. This calibration produces harder acceleration, higher sustained boost, and a noticeably stronger top-end.

Requirements

• High-flow race downpipes (mandatory)

  • Reduced backpressure

  • Improved turbo efficiency

  • Lower exhaust gas temperatures

Stage 2 Benefits

• +165 HP / +120 TQ gains

• Stronger mid-range and top-end power

• More responsive throttle mapping

• Higher boost targets with improved airflow

ECU Shipping Requirement

To ensure accurate file extraction, safe flashing, and optimal performance results, your ECU must be shipped to Momentum Motorsports for tuning.

Why Choose Momentum Motorsports?

• Dyno-tested calibrations tailored for the M840TE platform

• Smooth OEM-like drivability with extreme performance gains

• Safe, proven tuning strategies

• Trusted by McLaren owners worldwide