Thats an AMX1397 Intake. Jim Barnes makes them. There is a vacum port hidden on the other side of the Chrome tube connected to the filter. E-Mail amx1397 for info on the Intake and pricing etc. I also have one, the turbo up intake is 3" to the filter, with no restriction. I have heard both the BTG and the amx1397. The AMX1397 is louder and supplies more clean air to the turbocharger due to the increased diameter of the clean air piping used. I like it better than the BTG for performance, and its almost as pretty.......