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.

Notes:

• We have found the M157 engine stock performance numbers vary from the baseline figures claimed by Mercedes Benz. We typically see higher baseline numbers than claimed by the factory.
• Power gains are calculated based on stock numbers measured by RENNtech. Crank Performance Numbers are calculated with a 17% Drivetrain loss on 4MATIC vehicles.
• Our numbers will be dependent on conditions and fuel quality. 93+ Octane gasoline is mandatory with this Performance Upgrade.
• States known for poor fuel quality have to be supplied with a lower power setup.

Performance Numbers Overview 

S 63 AMG (W222 | Sedan | MY2014+ | 4MATIC | M157 | 5.5L V8 BiTurbo) Stock Performance (at crank):

• Rated by Mercedes-Benz:      577 HP @ 5,500rpm; 664 LB-FT @ 2,000-4,500rpm
• Rated by RENNtech:               605 HP @ 5,500rpm; 669 LB-FT @2,800-3,900rpm
  • Note: Mercedes M157 engine performance when measured, obtains higher power numbers than rated from factory.

S 63 AMG (W222 | Sedan | MY2014+ | 4MATIC | 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.