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    • Southern Hotrod offers a Mercedes-Benz 722.9 Speedshift MCT automatic transmission upgrade

      The main roadblock for modern Mercedes-AMG's seemed to be the TCU (transmission control unit) software. It seems tuners are able to address the TCU now on the 722.9 MCT transmission which means upgraded hardware to pair with the software is key.


      Southern Hotrod has the hardware for the 7-speed 722.9 MCT. BenzBoost is not familiar with this company but Benzboost users report some successful results in W205 C63 applications.


      SHR MERCEDES-BENZ 722.9 WAR VIKING TRANSMISSION KIT
      $2,199.00

      • Raybestos GPZ friction material K1, K2, K3, B1, B2, B3, BR
      • K3 and B1 steels
      • Machined K2 piston
      • Machined K3 piston
      • MAX Capacity K3 clutch support
      • B2 top steel
      • MAX duty O-ring and seal kit
      • Filter
      • Intermediate plate
      • MB aluminum Valve Body bolts
      • MB aluminum Bell Housing bolts
      • MB aluminum pan bolts

      The price seems decent but you need to pair this with solid TCU tuning.

      Perhaps this is a solution for 722.9 MCT owners to consider? It is working well for this C63.

      (Keep in mind this does not apply to 2019 on W205 C63's which received the new 9-speed MCT.)

      This article was originally published in forum thread: Southern Hotrod offers a Mercedes-Benz 722.9 Speedshift MCT automatic transmission upgrade started by Sticky View original post
      Comments 3 Comments
      1. SpeedLimit?'s Avatar
        SpeedLimit? -
        These guys used to be mopar specialists then took on mercedes since they used the same transmission with the 722.6, cool stuff
      1. Batman's Avatar
        Batman -
        Very interested in this. Can this upgrade be applied to a 2016 E63 AMG-S 4Matic (W212 / M157)? Who provides the TCU tuning, and will the TCU power and torque limitations be removed?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Batman Click here to enlarge
        Can this upgrade be applied to a 2016 E63 AMG-S 4Matic (W212 / M157)?
        Yes: https://southernhotrod.com/shr-war-viking-722-9/

        Not sure on the difference between the kit and the War Viking 722.9 transmission. Maybe it is that they assemble it for you?

        Click here to enlarge Originally Posted by Batman Click here to enlarge
        Who provides the TCU tuning, and will the TCU power and torque limitations be removed?
        Renntech seems to have this solved.