The ideal car for every family and probably the most iconic estate in the world: that is one way to describe the much-loved Audi RS6.

On this one we installed an external exhaust valve controller, so the driver decides the sound, not the car's system with its factory-set conditions for when the valves may and may not open.

After installation, a wireless remote lets you A) open the valves fully, B) close them completely, C) keep the original setting or D) open them to 50%.

This modification has no effect on the car's warranty and can be used on both standard and aftermarket valved exhausts.