2019 Mclaren
600LT
Your 2019 Mclaren 600LT deserves more. Our dyno-proven ECU tune delivers real-world gains you'll feel from the first drive.
Calibration Details
In-House Powertrain Calibration
The 2019 McLaren 600LT is the Longtail at its most refined, a culmination of McLaren's Sports Series engineering with 592 HP and 457 ft-lbs from the M838TE 3.8-liter twin-turbo V8, top-exit exhaust, carbon fiber body panels, and track-oriented aerodynamics. Our team has calibrated hundreds of 600LTs and knows exactly how to extract maximum safe performance from this platform.
Our Stage 1 ECU calibration delivers +80 HP and +80 TQ, bringing the 2019 600LT to approximately 672 HP and 537 ft-lbs. We raise boost pressure targets and optimize ignition timing across the full powerband, with particular attention to the 4,500–7,000 RPM range where the factory pulls back most aggressively. Throttle response becomes immediate and linear. Stage 2 pushes total output to 697 HP and 557 TQ, genuine Super Series power levels in a lighter, more agile package. Every calibration is engineered and tested in-house by Mega 3 Performance, backed by 15+ years of expertise and 500+ McLaren projects. ECU map switching and antilag systems are available, and our worldwide service ensures access regardless of your location.
Performance Stages
Tuning through Stage 1 & Stage 2 ECU calibration works to improve horsepower, torque, and overall engine responsiveness. By optimizing the engine management system, we unlock the true potential of your vehicle, delivering a smoother powerband, enhanced throttle response, and a dramatically more engaging driving experience, all while maintaining factory reliability and safety parameters.
Customer Reviews
What our clients say
"If your looking for the fastest and most Reliable McLaren in the World then M3P is your place! Ask for Nate he was very helpful and Knowledgeable and everything turned out just like I wanted. Highly Recommend!!"
"very professional and they know their stuff! highly recommend! call nate, he will take care of you! thanks again guys."
"M3P took my McLaren to the next level! Safa and Nate were incredibly professional and provided work that is second to none. If you are looking to add more juice to your McLaren or AMG, M3P is the place to be. Thanks guys for the great work."
"I have been dealing with Safa for 2 years since owning my McLaren 650S. He is the reason for my continued McLaren ownership as I confidently know I am in great hands with someone knowledgeable and trustworthy! I'm tuned by Safa and the car has ran flawless for 10k+ miles. In addition his crew Nate and Josh are awesome guys and they all feel like family. Couldn't ask for a better shop or people to deal with. Proud to be Mega Strong 💪"
"I brought my AMG in for a bit of routine maintenance, as well as some slight performance modifications. 10/10 recommend, Mega 3 Performance is exceedingly competent on a variety cars and took fantastic care of my car. Their fabrication work is next level, and their technicians are very knowledgeable. I will be using Mega 3 for all of my performance and maintenance moving forward over the Mercedes dealership."
Frequently Asked Questions
Common questions about tuning the 2019 Mclaren 600LT.
A Stage 1 ECU calibration on the 2019 Mclaren 600lt adds approximately +80 Horsepower and +80 ft-lbs of Torque over the stock figures, delivering noticeably improved acceleration and throttle response.
Our Stage 1 calibration is designed to operate within safe engine parameters without triggering fault codes. We recommend consulting with us about your specific situation and warranty coverage before proceeding.
Our Stage 1 calibration for the 2019 600lt is a software-only upgrade. You do not need any mechanical modifications, making it a clean, reversible performance improvement that works on your stock vehicle.
No, our custom ECU calibration for the 2019 600lt is engineered to enhance throttle response and smooth out the powerband. The result is better drivability in everyday traffic, as well as a more engaging experience during spirited driving.
McLaren packages
Choose from our three-tiered McLaren performance package system, designed to deliver unprecedented power and reliability. Each package includes comprehensive engineering, custom components, and professional calibration.