RENNtech EVM | Exhaust Valve Module | Maserati | Ghibli mercedes-benz-s-class--222---2018-2020--s-650-maybach-esr9170956 ECU+ Upgrade | Up to

ECU+ Upgrade | Up to 740 HP / 806 LB-FT | Gains: +87 HP & +44 LB-FT

while cruising the exhaust valves will never fully open

The OG RENNtech logo underscores Hartmut Feyhl's direct lineage from AMG and his role in shaping the Hammer legacy

Carrera S Cabriolet

RENNtech EVM | Exhaust Valve Module | Maserati | Ghibli mercedes-benz-s-class--222---2018-2020--s-650-maybach-esr9170956 ECU+ Upgrade | Up toEVM Exhaust Valve Module (Remote Controlled) NOT SO FUN FACT: If your vehicle is equipped with factory exhaust valves, with or without a center console button to open or close them, factory settings do NOT allow the flaps to fully open unless certain speed and or RPM have been reached. For example, while cruising the exhaust flaps will never fully open! THE EVM SOLUTION: RENNtechs Exhaust Valve Module, (EVM) gives you complete control over the exhaust