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. The following videos showcase the different sound levels using our GoPro runs on an Audi R8 V8 and Porsche 987.1 respectively.
A visual demonstration of the use of the key fobs is also at your disposal-
| Subtype | Vacuum Valve Kit |
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