Vehicle sounds like a turbocharged car: when installed, the exhaust pressure creates a sound similar to a turbocharged engine with an active exhaust system. HIGH QUALITY: Made from durable aluminum alloy, lightweight and built to last. EASY TO INSTALL: Universal fit design allows quick installation on most vehicle exhaust systems. Fits tailpipes ranging from 37mm to 48mm. Installation typically takes just a few minutes. Note: This turbo sound whistle is not suitable for highly curved or obstructed tailpipes. Ensure the exhaust pipe is straight enough and has sufficient length to accommodate the device. Installation instructions: 1. Loosen the screws on the turbo sound whistle. 2. Insert the body of the whistle into the exhaust muffler, with the larger opening facing inward. 3. Tighten the screws securely to ensure the device remains fixed during operation. 4. Professional installation is recommended. No refunds will be issued for damage caused by improper self-installation. Specifications: - Material: Aluminum alloy - Colors available: Blue, Red, Black, Silver, Gold - Gross weight: S 0.071KG, M 0.081KG, L 0.108KG, XL 0.136KG - Net weight: S 0.070KG, M 0.080KG, L 0.108KG, XL 0.135KG - Fitment: Universal - Package includes: 1 x Turbo Tail Whistle, 1 x L-spanner, 1 x Thimble