RENNtech EVM | Exhaust Valve Module | McLaren mercedes-benz-sl-class--231---2017-present--sl63-amg-esr2518058 Gains up to: +80 HP

Gains up to: +80 HP | +106 LB FT

clocking a quarter mile time of 10

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

778 LB-FT @ 4

Mercedes-Maybach S 600 BiTurbo (W222 - M277 6

RENNtech EVM | Exhaust Valve Module | McLaren mercedes-benz-sl-class--231---2017-present--sl63-amg-esr2518058 Gains up to: +80 HPEVM 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