Mercedes
AMG GT 63
2026 ECU TUNE
We specialize in extracting hidden performance. Our custom calibrations add up to +214HP to your 2026 Mercedes AMG GT 63, software only, fully reversible.
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
Stage 1 adds up to 170 HP / 172 PS and 190 lb-ft / 258 Nm, moving the calculated figures to 747 HP / 757 PS and 780 lb-ft / 1058 Nm.
Stage 2 adds up to 214 HP / 217 PS and 230 lb-ft / 312 Nm, moving the calculated figures to 791 HP / 802 PS and 820 lb-ft / 1112 Nm.
ECU Unlock
An ECU unlock is the process of removing the manufacturer's read/write protection on a vehicle's engine control unit, giving tuners access to the internal calibration data using flash tools. This restores the ability to read the original calibration, modify maps and parameters, and write custom software back to the unit, forming the foundation that other services, like map switching or custom calibration, are built on top of.
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 2026 Mercedes AMG GT 63.
A Stage 1 ECU calibration on the 2026 Mercedes Amg Gt 63 can deliver up to +170 Horsepower and +190 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 2026 Amg Gt 63 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 2026 Amg Gt 63 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.