RENNtech ECU Upgrade M157

RENNtech M157 Biturbo ECU Upgrades are TÜV approved!

Our proprietary ECU upgrade for the Mercedes M157 Biturbo 4-MATIC engine offers huge gains in performance across the entire RPM range without sacrificing around town comfort or daily driver reliability.

CLS 63 AMG (W218 - M157 Biturbo 4-MATIC Engine) Stock Performance:

• CLS 63 AMG:
• 550 HP @ 5,250-5,750 RPM; 531 LB-FT @ 1,750-5,000 RPM

• CLS 63 AMG S:
• 577 HP @ 5,500 RPM; 590 LB-FT @ 2,000-4,500 RPM

• Note: Mercedes M157 engine performance when measured obtains higher numbers that rated from factory.

Modified Performance:

• CLS 63 AMG:
• 669 HP @ 5,550 RPM; 734 LB-FT @ 2,750-4,000 RPM

• CLS 63 AMG S:
• 669 HP @ 5,550 RPM; 734 LB-FT @ 2,750-4,000 RPM