Electronic sound simulation system for blow off valve turbo. It is designed to mimic the characteristic pressure relief sound of a turbo engine. The device consists of a speaker (horn) and a micro switch. The switch is placed on the gas pedal and activates the sound when the driver fully presses the gas and then releases it. It easily connects to the 12V electrical supply of the car. The kit includes mounting brackets, cables, screws, and ties for installation. Dimensions: phi 118 * H 110 mm Voltage: 12V