Mercedes A35 AMG (GPF Models) - Active Valve Control & Cabriolet > 2004 to 2009 Piston head is optimized for

Piston head is optimized for ideal hydrodynamic flow

all made possible by the exhaust technology into the Cobra Sport downpipe

Example of Audi S5 3

you are left with one the most capable all-round cars on the road which is almost faultless

ECS Tuning Luft-Technik Intake System - Golf R32 Mk5

Mercedes A35 AMG (GPF Models) - Active Valve Control & Cabriolet > 2004 to 2009 Piston head is optimized forPlug and play exhaust valve controller. Remote controlled via key fobs this product offers control over when your exhaust valves are open and closed. It has 3 operating modes as below: Always open 100% Always closed 100% Return to OE functionality using the RPM range and drive modes to operate the valves. Also features a memory function so the vehicle can be started up in the last mode used. ** NOTE ** Exhaust valves should never be fully closed under