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    • Renntech releases C217 Mercedes-Benz S550 coupe M278 exhaust suite

      Want a bit more of an aggressive sound of your Mercedes-Benz S550 M278 4.7 liter twin turbo V8? Of course you do and Renntech has you covered with their exhaust suite for the platform (among other upgrades).


      RENNtech Exhaust Upgrades for the 217 - S550 Coupe

      - Stainless Steel Sport Muffler
      - Stainless Steel Donwpipes w/200 Cell Cats
      - EVM | Exhaust Valve Module

      The sport cats run $4280.00 which is well worth it for those who want more power and torque while uncorking the exhaust but remaining emissions compliant. These will not cause a CEL (check engine light either).


      In addition to the exhaust pieces Renntech has ECU software and transmission upgrade available for the M278. They also have a new HHT (handheld tuner) for loading files yourself.

      Audio clip below:


      This article was originally published in forum thread: Renntech releases C217 Mercedes-Benz S550 coupe M278 exhaust suite started by Sticky View original post