Description:Make your vehicle sound like a turbo vehicle with the turbo system or blow off valve.Universal fitment for all vehicle models.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.Note:This turbo sound is not suitable for curved pipes, if the curvature is minor, the fitting bracket is slightly curved to match the tailpipe.For tailpipes with deflected outlets, it might be necessary to modify slightly the shape to allow installation.Prior to the purchase and installation, please make sure that the interior of the tailpipe is suitable and sufficiently long(11-12cm) to contain the turbo sound device.Package includes:1 x Turbo Sound Whistle1 x Small Spanner1 x Screw