I bought this for my R8 RWS, but I actually never got around to installing before trading the car in. After a bit of researching, I found this was one of the best solutions for controlling when your valves were open, instead of when the car decided they should be.

Plug & Play, and you can easily program the Homelink buttons to function as an open/closed button for the valves.

I paid over $400 shipped for this, just looking to get it out of here, asking $350 shipped

http://www.forzacomponenti.com/modelb4a.html has all of the info you need about it