McLaren
600LT
2018 ECU TUNE
Unlock what the factory left on the table. Our in-house calibrations for the 2018 McLaren 600LT deliver up to +105HP & +100TQ, no hardware required.
Performance Stages
Stage 1
AvailableECU Calibration — Software Only
Stage 2
AvailableECU Calibration — Software Only
Available Add-ons
Enhance your calibration
Calibration Details
In-House Powertrain Calibration
The 600LT brought the Longtail treatment to the Sport Series for the first time. Built on the 570S platform with track-focused upgrades, lighter body panels, a fixed rear wing, and that distinctive top-exit exhaust, it produces 592 HP and 457 lb-ft from the M838TE 3.8-liter twin-turbo V8. The reduced exhaust backpressure from the top-exit system means the engine breathes better than the standard 570S, responding particularly well to calibration work.
Stage 1 calibration adds up to 80 HP and 80 lb-ft, bringing output to approximately 672 HP and 537 lb-ft.
Stage 2 delivers up to 105 HP and 100 lb-ft over stock, reaching roughly 697 HP and 557 lb-ft, figures that approach the standard 720S.
All calibrations are developed for 91 octane and 93 octane fuel. Custom calibrations are available for 100 octane or other race fuels. ECU map switching and antilag are offered as add-on options.
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 2018 McLaren 600LT.
A Stage 1 ECU calibration on the 2018 McLaren 600lt can deliver up to +80 Horsepower and +80 ft-lbs of Torque over the stock figures. Actual results may vary, but expect noticeably improved acceleration, a smoother powerband, and sharper 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 2018 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 2018 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.