RENNtech M157 Biturbo ECU+ Upgrades are TÜV approved!
Our proprietary ECU+ upgrade for the Mercedes M157 Biturbo engine offers huge gains in performance across the entire RPM range without sacrificing around town comfort or daily driver reliability.
Performance Numbers Overview
M157 | 5.5L V8 BiTurbo Stock Performance (at crank):
- Rated by Mercedes-Benz: 577 HP @ 5,500rpm; 590 LB-FT @ 2,000-4,500rpm
- Rated by RENNtech: 605 HP @ 5,500rpm; 646 LB-FT @2,800-3,900rpm
- Note: Mercedes M157 engine performance when measured, obtains higher power numbers than rated from factory.
M157 | 5.5L V8 BiTurbo Modified Performance (at crank):
- Rated by RENNtech: 669 HP @ 5,500rpm; 734 LB-FT @ 3,700rpm
555 awhp @ 5,500rpm; 609 awtq @ 3,700rpm
- Crank Performance Numbers are calculated with a 17% Drivetrain loss on 4MATIC vehicles.