RENNtech Stage II Turbo Upgrade | M256 | 3.0L I6 Turbo EQ Boost | 540HP/515LB-FT | MY2018+ mercedes-benz-slk-class--171---2004-2010--slk-55-amg-esr5743216 TCU Upgrade

TCU Upgrade

549wtq @ 3

CLASS S LONG (V 220) 500 V8 [5 gear] [2 Filters Required] (HP: 306 | Year: 98 > 03)

You get to keep the adaptive damping features of your factory shock while improving the spring rate and gaining adjustability

RENNtech Stage II Turbo Upgrade | M256 | 3.0L I6 Turbo EQ Boost | 540HP/515LB-FT | MY2018+ mercedes-benz-slk-class--171---2004-2010--slk-55-amg-esr5743216 TCU UpgradeIncludes Turbo Upgrade, and ECU Upgrade. Gains: Up to +104HP +105LB FT RENNtech Stage II Turbo upgrade for the AMG 53 M256 AMG 3. 0L Inline 6 engine. RENNtech has been at the forefront of ECU tuning for over 30 years. Through our experience, countless hours of in house Research & Development, and extensive testing we ensure that all RENNtech Performance upgrades offer incredible performance gains as well as rock solid reliability. The RENNtech Stage