Turbo Sound Simulator Whistle, Exhaust Whistle Muffler, Car Turbo Sound Whistle, Blow-off Valve Simulator Description: This is a whistle of the turbo pressure, the aluminum whistle on the exhaust pipe, and the air through the exhaust pipe to make it sound. Features: Brand New and high quality. Made of aluminum alloy material, light weight and durable. Universal fitment for all vehicle models. Easy to install, can be installed under 2 minutes. Periodically (after 500-1000km) check and re-tighten the bolt and rock nut. After installing this product, the pressure blowing out of your exhaust will make your vehicle sounds like a turbo vehicle with the turbo system or blow off valve. Specification: Material: Rubber Material: Aluminum alloy Applicable: General purpose Installation: Firstly, loosen the screw on the Turbo Sound Whistle. Then, place the Turbo Sound Whistle body inside the exhaust muffler with the larger opening the facing inside of the muffler. Finally, screw the screws on the Turbo Sound Whistle to tighten the item so it doesn't fall off while driving.(Professional installation is always recommended) 1. Due to different light and screen settings, the color of the item may be slightly different from the picture. 2. Due to different sizes, please allow slight size differences. Size: M size is suitable for 1.6-2.0 displacement, suitable for exhaust pipe diameter: 37-48 mm Shipping color: black Quantity shipped: 1