Performance ECU software upgrade improves horsepower, torque, and driving characteristics of the M275 6.0L V12 Bi-Turbo Engine by reprogramming various sensor inputs, air/fuel ratios, and boost pressure.
NOTE: This is not a physical/shipped product. This upgrade requires you to send us your ECU for re-programming. You will be emailed a download link with detailed instructions after adding this to your cart and checking out.
SHIPPING DETAILS: Shipping costs for sending an ECU to Fabspeed is the responsibility of the purchaser. The ECU will be tuned within 24-48 hours of receiving it and Fabspeed will then ship back the ECU using whatever method it was shipped in with. (For example: If you send in your ECU via Ground shipping, we will ship it back via Ground. If you ship it via Overnight, we will ship it back via Overnight.)
- Fits all Mercedes-Benz AMG 65 M265 6.0L V12 Bi-Turbo Vehicles: S-Class / SL-Class / G-Class
- Stock - 621 HP / 738 TQ
- Tuned - 741 HP / 888 TQ
- Fabspeed Motorsport saves your stock/factory ECU settings so that you can revert your vehicle back to stock settings at any time