McLaren 675LT 2017

ECU Tune Service — Digital software file for vehicle performance tuning. This is not a vehicle for sale.

Factory: 666 HP / 516 lb-ft
ECM Stage 1 Tune: 750 HP / 580 lb-ft
ECM Stage 2 Tune: 820 HP / 640 lb-ft

Unleash the Power: Elite ECU Tuning for Your McLaren 675LT 2017

The McLaren 675LT 2017 with its 3.8L Twin-Turbo V8 (M838TE) is an engineering masterpiece already pushing the boundaries of performance. Our precision ECU tuning extracts every last horsepower the factory left untapped — without sacrificing the reliability and refinement that defines this machine.

Tuning can be done by sending your ECU in, or we ship a flashing tool which must be returned after the tune is complete.

EVERY TUNE INCLUDES:

• Reprogrammed torque management parameters
• Optimized boost pressure mapping for maximum power delivery
• Reprogrammed variable valve timing control for enhanced drivability
• Smoother engine operation throughout the RPM range
• Reprogrammed throttle response for both Comfort and Sport modes
• Raised RPM limiter (optional)
• Top speed limiter removal (optional)
• Variable RPM limit based on engine temperature warm-up (optional)
• Cold start modification (optional)
• Octane-specific ignition timing optimization (91, 93, E85 blends)

TUNING METHODS:

OBD Tune
OBD tunes allow customers to simply plug and upgrade their ECU. We will ship you an ECM Tuner cable and email you detailed instructions on how to complete the installation yourself.

Bench Flash
Requires ECU to be mailed in. This upgrade requires you to send us your ECU for professional re-programming in our facility.

TALK TO A SPECIALIST:

Get in contact with an ECM Tuner specialist to determine which tuning method is best for your vehicle and learn more about the installation process.

The 3.8L Twin-Turbo V8 (M838TE): Built for More

The 3.8L Twin-Turbo V8 (M838TE) powering the McLaren 675LT 2017 responds exceptionally well to ECU recalibration. With the factory tune, McLaren leaves significant performance on the table to accommodate various fuel grades, emissions requirements, and conservative reliability margins. We unlock that reserve.

Stage 1 Tune: Unlocking Hidden Potential

• +84 Horsepower – Feel the surge from every corner exit
• +64 lb-ft Torque – Massive mid-range punch for confident overtaking
• Enhanced throttle response – Sharper, more immediate power delivery
• Improved fuel efficiency – Optimized air-fuel ratios under normal driving

Stage 2 Tune: Maximum Performance

• +154 Horsepower – The ultimate expression of this engine's capability
• +124 lb-ft Torque – Relentless power throughout the entire rev range
• Optimized curves – Peak performance across all driving conditions
• Track-ready calibration – Built for spirited driving and track days

Why Choose ECM Tuner?

Our team specializes exclusively in European performance vehicles. Every tune is developed through extensive dyno testing and real-world validation. We don't compromise — we deliver results.

IMPORTANT INFORMATION:
All ECM Tuner products are intended for off-road and closed-course competition use only.

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