RENNtech EVM | Exhaust Valve Module | McLaren mercedes-benz-sl-class--231---2017-present--sl63-amg-esr2518058 If your Mercedes-AMG is equipped

If your Mercedes-AMG is equipped with factory exhaust valves

AMG GT 63 S 4-Door Coupe | MY2019+

DBX Straight Six

We have found the M177 engine stock performance numbers vary from the baseline figures claimed by Mercedes Benz

778 LB-FT @ 4

RENNtech EVM | Exhaust Valve Module | McLaren mercedes-benz-sl-class--231---2017-present--sl63-amg-esr2518058 If your Mercedes-AMG is equippedEVM 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