RennTech Performance Intermediate ECU Upgrade For Mercedes-Benz S212 E 63 AMG S

VENDOR: RennTech

SKU: 54.212S.E63BI.FL

All orders will include an AutoTalent window decal


RennTech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal. RennTech proprietary tuning module stores both the RennTech tuned file and your vehicles stock file. The module plugs directly into the OBD2 port and delivers the file you choose directly to the ECU. Programming takes only a few minutes and the vehicle can be reflashed at any time as many times as you wish.

RennTech intermediate level 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.

This is ideal for customers who want increased performance in their daily driver without worry of extra strain on driveline components or for areas and countries with extreme altitudes, temperatures or fuel quality concerns. This is a slight reduction from our standard tune but still offers white knuckle performance at one of the most affordable price points in the tuning market.


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.

RennTech 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


  • Gains: +33HP & +49LB-FT
  • Long-lasting and driver reliability
  • Significant gains in horsepower
  • Increases the performance
  • Significant gains torque 
  • Increasing the engine's rev limiter
  • Incredible performance gains

      Stock Performance:

      • 577 HP @ 5,500rpm; 590 LB-FT @ 2,000-4,500rpm
      • 605 HP @ 5,500rpm; 646 LB-FT @2,800-3,900rpm

      Modified Performance:

      • 638 HP @ 5,500rpm; 695 LB-FT @ 3,700rpm
      • 530 awhp @ 5,500rpm; 577 awtq @ 3,700rpm

      Performance Graph:

      Vehicle Fitment:    

      • 2014 Mercedes-Benz S213 E 63 AMG S BiTurbo 4-MATIC+
      • 2015 Mercedes-Benz S213 E 63 AMG S BiTurbo 4-MATIC+
      • 2016 Mercedes-Benz S213 E 63 AMG S BiTurbo 4-MATIC+  


                                Images are for representation purpose only and may differ depending on application.