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RENNtech ECU+ Upgrade | W212 | E 63 (S) AMG | Sedan | 669 HP / 734 LB-FT | M157 | 5.5L V8 BiTurbo | MY2014+

ECU+ Upgrade | Up to 669HP / 734LB-FT | Gains: +64HP & +88LB-FT
SKU: ECU:54.212W.E63BT.FL
Retail price without tax: $2,980.00

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RENNtech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal!

Our 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 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.




  • 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. Please call for details and Race fuel options +1-561-845-7888.


Performance Tests:
Vehicle Upgrades 0-60mph 0-100mph 60-130mph 1/4 Mile ET Trap Speed
W212 - E63 AMG S 4MATIC Sedan 

Stock w/Launch Control

3.68 sec 8.47 sec 10.60 sec 12.00 sec 119 mph
W212 - E63 AMG S 4MATIC Sedan  ECU+ Upgrade w/Launch Control 3.41 sec 7.95 sec 9.98 sec 11.87 sec 120 mph
W212 - E63 AMG S 4MATIC Sedan  R2 Pkg w/Launch Control 3.37 sec 7.83 sec 9.90 sec 11.61 sec 122 mph
W212 - E63 AMG S 4MATIC Sedan  R2 Pkg + TCU Upgrade w/Launch Control 3.09 sec 7.40 sec 9.40 sec 11.31 sec 124 mph
*If not otherwise noted, performed on non-prepped asphalt and with OEM, Street-Legal and/or Non-Performance tires. Data measured with Racelogic Performance Box.


Performance Numbers Overview 


E 63 AMG S (W212 | Sedan | FL MY2014+ | 4MATIC | 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.



E 63 AMG S (W212 | Sedan | FL 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.

For detailed explanation on crank HP, wheel HP, drivetrain loss, etc. please click here.


Contact us

7825 SW Ellipse Way, Stuart, FL 34997
(+1) 561 - 845 7888
Mon - Fri 9am - 6pm


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7825 SW Ellipse Way - Stuart, FL 34997
TEL: 561.845.7888 FAX: 561.845.6777 E-MAIL: