Make your vehicle sound like a turbo with the turbo system or blow-off valve. Universal fitment for all vehicles models It is made of good quality and lightweight aluminum. Easy to install. Installation:Loosen the screw on the Turbo Sound Whistle. Place the Turbo Sound Whistle body inside the exhaust muffler with the larger opening facing the inside of the muffler. Screw the screws on the Turbo Sound Whistle to tighten the item so it does not fall off while driving. Professional installation is always recommended products damaged through self-installation will not be refunded. Thank you for being so understanding.