This muffler whistler is used to give your exhaust that sporty whistling sound.Make your vehicle sound like a turbo vehicle with the turbo system or blow off valve.Universal fitment for all vehicles models. Made from light weight aluminum. 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

• Please make sure the tailpipe is big and long enough to contain the Turbo Sound Whistle.
• Please check and re-tighten the bolt regularly.
• Only works with Stock muffler.
• Make your car sound like a turbo vehicle with the turbo system or blow off valve.
• Easy to install on the car's tailpipe.

Please make sure the tailpipe is big and long enough to contain the Turbo Sound Whistle.ouledixun