POWER UP THE CAR'S ROAR: This is a turbo sound simulator whistle that simulates the pressure release sound of the turbine. After installation, your car will sound like a turbo vehicle with the turbo system or blowoff valve. EASY TO INSTALL: It can be installed in 2 minutes. 1. Loosen the screw on the turbo. 2. Insert the sound whistle into the tailpipe. 3. Tighten the screw so that it does not fall off while driving. Make your vehicle sound like a turbo vehicle with the turbo system or blowoff valve. LOOK: Beautiful. Spacious. Very stylish and inexpensive - this is the first choice for decorating your vehicle. Easy to install. Near the exhaust port. Four sizes are available. This exhaust valve is suitable for most vehicles and can be used in cars and motorcycles. It is the ideal accessory for vehicle aftermarket installation. PREMIUM MATERIAL: Car turbo sound whistle made of durable material. Corrosion-resistant and rust-resistant. Long-term use. Easy to install on the car's exhaust. Beautiful appearance. Very fashionable. It is the first choice for decorative cars. WARM TIPS: The turbo sound whistle is not suitable for extremely curved tailpipes. For vehicles with small displacement and a large displacement, choose a large one because the whistle is caused by the airflow. The larger the displacement, the easier it is to make a sound.