RennTech Performance ECU Upgrade For Mercedes-Benz C216 CL 65 AMG

VENDOR: RennTech

SKU: 54.216.CL65

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 tuning software for Mercedes offers significant gains in horsepower and torque across the vehicles entire power band. By modifying ignition timing and throttle mapping, optimizing air/ fuel ratios, increasing the engines rev limiter and modifying boost mapping for turbo charged vehicles, RennTech performance software unleashes your Mercedes true potential.


  • Gains:+49HP & +102TQ
  • 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:

      • 621 HP @ 5500 RPM; 738 LB-FT @ 2000-3000 RPM

      Modified Performance:

      • 670 HP @ 5500 RPM; 840 LB-FT @ 3500 RPM

      Vehicle Fitment:    

      • 2007 Mercedes-Benz C216 CL 65 AMG
      • 2008 Mercedes-Benz C216 CL 65 AMG
      • 2009 Mercedes-Benz C216 CL 65 AMG
      • 2010 Mercedes-Benz C216 CL 65 AMG
      • 2011 Mercedes-Benz C216 CL 65 AMG
      • 2012 Mercedes-Benz C216 CL 65 AMG
      • 2013 Mercedes-Benz C216 CL 65 AMG


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