This is an R2 valve controller kit. For two valves in your exhaust, you should use an R2 kit. The R2 kit consists of a key fob controlled switch to control the valves (easily attached to a keyring), the wiring and the control box to receive the signal. When fitting these valves you may wish to refer to this diagram which will get you started- Link

We do not recommend using only one valve and an R1 kit on a duplex (twin) system as you will have inconsistency with the sound.

These are the same valves/kits that we use in our popular valved exhaust range for Audi R8, Lamborghini Gallardo and Porsche 911, among others.

Note: On Porsche models with Homelink you may pair to the Homelink controls in place of key fobs.