1 Set Blow Off Valve Noise Turbo Sound Whistle Simulator Muffler Kit Accessories

Whistle Length: 102mm. Tighten first bolt2, then the rock nut (fig.2) to prevent loosening due to vibrations. Make your vehicle sound like a turbo vehicle with the turbo system or blow off valve. Easy-fitting on the vehicle's muffler, it reproduces the sound of a turbo engine car.