RENNtech M157 Engine 5.5L V8 BiTurbo ECU Plus Upgrade (669 HP / 734 LB-FT)

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  • $3,495.00

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.