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RENNtech



RENNtech Mercedes AMG 63 (M156 6.2L N/A) & 63 BiTurbo (M157 5.5L BiTurbo) incl 4-MATIC ECU Upgrade

 
  • NEW! Intermediate Level ECU Upgrades
  • Up to 701hp & 836ftlb available depending on your "63" series Mercedes Benz 
  • Used in the Mercedes CL63, CLS63, CLS63S, E63, E63S, S63, SL63, ML63, G63 & more!
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RENNtech Mercedes CLA45 AMG ECU Upgrade

 
Our proprietary ECU upgrade for the Mercedes M133 engine offers huge gains in performance across the entire RPM range without sacrificing around town comfort or daily driver reliability.
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