RennTech HHT ECU Upgrade 2006-2011 Mercedes-Benz ML 63 AMG W164

If you want more from the 2006-2011 ML 63 AMG without touching the hardware, this RennTech HHT ECU Upgrade is the cleanest way to get it. RennTech revises the factory calibration for the 6.3L M156 naturally aspirated, raising power and torque through the full band and keeping the smooth manners the car left the factory with. RennTech rates the ML 63 AMG at up to 530 hp and 485 lb-ft with this upgrade, a gain of 23 hp and 20 lb-ft.

Watch it explained

Features

• Loaded through the RennTech HHT hand-held tuner via the OBD2 port, no ECU removal
• The HHT stores the tuned and the factory file, so you can switch back to stock any time
• Revised ignition timing, throttle mapping, air-fuel ratios and boost control
• Gains across the entire rev range, not just at peak
• Developed on RennTech's own dyno and road tested
• Keeps factory-like drivability and reliability for daily use

What is included

• RennTech calibration for your car
• Delivery as listed by RennTech for this model (HHT tuner or ECU flash)

Specs

Fitment notes

For the ML 63 AMG (W164), 2006-2011 as listed by RennTech. Please include your VIN with the order so RennTech can confirm the exact application. Check the fitment table before ordering, and contact us if your car differs.

Fitment