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675LT ECU Tune
Purchase 675LT ECU Tune
  • SKU: 675LT-ECU-Tune

    675LT ECU Tune

  • Gains are at the engine or "crank". Actual gains are dependent on the model, model year, fuel octane, engine health, and environmental conditions. Learn More

  • $2,999.99

  • Prop 65 warning

    This product can expose you to chemicals including carbon black, silica - crystalline, formaldehyde, and lead which are known to the State of California to cause cancer, and lead, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to

Weistec Horsepower 730
Weistec Torque 652
Manufacturer Weistec
Street legal in all the US States No
Engine Family M838T
Stock Horsepower 666
See more
year make model trim engine
2016 McLaren 675LT Spider Twin Turbo 3.8L V8 (M838TL)
2016 McLaren 675LT Base Twin Turbo 3.8L V8 (M838TL)

ECU Tuning Process: How do I get my ECU tuned?

The factory Mclaren 675LT is an extraordinarily accomplished track car for the road. Having all the attributes that make a daily driven vehicle usable makes you think it's a watered down track car. But when you plant your right food down on the accelerator, an unexpected urgency rushes you forward like no other road car. No drama, just pure acceleration. Having this unparalleled performance lurking beneath the sensual body lines is beyond intoxicating. However, there is always room for more.

"The car is already fast enough". As true as that may be, we cater to the clientele that thinks otherwise. Truly experience the capabilities of your 675LT today with our ECU Calibration.

 Weistec 675LT ECU Power 

What does all this mean to you?  More power, sharper throttle response, and a complete focus on the driver makes this the perfect addition to your McLaren for a much more enjoyable experience for you. 


ECU Tuning Process: How do I get my ECU tuned?

Key Features:

  • Improved Throttle Response

  • Optimized Fuel, Spark, and Boost

  • +90 Wheel Horse Power

  • +110 Wheel Torque