Turbo Sound Exhaust Muffler Pipe Whistle Blow off valve BOV Simulator Whistler L 1. Universal fitment for all vehicles modelsDo not fit piping inlet which is more than 2.5inch 2. Made of high quality and light weight aluminum 3. Make your vehicle sound like a turbo vehicle with the turbo system or blow off valve 4. CNC Machined from 6061 T-6 Aluminum 5. 1" Inlet for best effect