This is the Steeda Sound Symposer Delete. On your application, your vehicle comes factory with a "sound symposer" which is a mechanism that connects your intake, and in other applications, it connects the blow-off valve through the firewall and into the cabin of your vehicle for more engine noise effects. The problem is that there are those who would rather not have the extra clutter in the engine bay, the extras noise, or the extra weight.
Steeda has developed their Sound Symposer Delete to provide a cleaner and more streamlined look, and the installation can be reversed back to the factory function if required. Included will be the plates as well as the hardware to make this delete ready for the installation.