The main feature of the electronic blow off value is to simulate the dump value sound. You don't have to cash out on a turbo kit, and this will not increase your insurance premium either. You will have all the sounds and style of a turbo but without any of the expensive cost.Features:1. Help blow off the redundant air to protect the engine throttle valve & air inlet pipe, form a cool car sound.2. Universal auto parts car electronic turbo blow off valve sound for most auto cars.3. 4 wires connection system. Black is for negative, red is for positive,blue and green are for the switch. 4. According to the loading: connect the cathode wires battery, switch connected to the vehicle accelerator.5. You will have all the sounds and style of a turbo but without any of the expensive cost.Specifications:Color: Black+RedQuantity: 1 pcSize(Diam. x H): 119 x 110mm/4.7' x 4.3'Package Weight: approx. 625gApplicable Models: General without turboFitment: Suitable for most of carsInstallation Instructions:1. Red wire to positive battery terminal.2. Black wire to negative terminal.3. Blue and green are switch wires through fire wall to accelerator pedal.4. Attached micro switch to accelerator pedal.5. Connect switch to the normally closed terminal and earth terminal on micro switch.6. Push accelerator fully in, when releasing the speaker makes dump valve sound.Package Included:1 x Turbo Blow Off Valve2 x Iron Plates 5 x Screws3 x NutsNotes:1. Easy to install, but professional installation is highly recommended.