RENNtech EVM | Exhaust Valve Module | Porsche | 911 | Cayenne | Cayman | Boxster | Panamera mclaren-slr-sls-class--197---2012-2014--esr2245349 With the proprietary RENNtech ECU+

With the proprietary RENNtech ECU+ Tuning the C205 - C 63 AMG Coupe gains up to +56 HP and +107 LB-FT

E63 S AMG 4-MATIC+ Wagon | MY2018+

Power figures are calculated with a 16% drivetrain loss for AWD 9-speed vehicles

X290 - AMG GT 4-Door Coupe AMG GT 43 4-Door Coupe | MY2019+ | *Needs to be equipped with optional performance exhaust/factory valves*

RENNtech EVM | Exhaust Valve Module | Porsche | 911 | Cayenne | Cayman | Boxster | Panamera mclaren-slr-sls-class--197---2012-2014--esr2245349 With the proprietary RENNtech ECU+EVM 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