RENNtech EVM | Exhaust Valve Module | Aston Martin mercedes-benz-cl-class--215---2001-2006--cl-600-biturbo--2003-2006--esr3211224 0" | Rear: 21" x

0" | Rear: 21" x 10

The RENNtech ECU Plus Upgrade brings the SLR McLaren up to 675 HP and 646 LB-FT | Gains: +47 HP and +25 LB-FT

CLASS M (W 164) ML 63 AMG [2 Filters Required] (HP: 510 | Year: 06 > 10)

The Akrapovič Delete-R has been developed for use of Akrapovič exhaust system in combination with standard ECU settings and will eliminate possible engine check error codes caused by the improved emission flow

S/SEL 500 (W140)

RENNtech EVM | Exhaust Valve Module | Aston Martin mercedes-benz-cl-class--215---2001-2006--cl-600-biturbo--2003-2006--esr3211224 0" | Rear: 21" xEVM 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