Features:Pressure relief valve installed turbo car envy fabulous voice,Universal Auto parts car fake dump valve electronic turbo blow off valve sound.100%Brand NewApplication:UniversalApplicable models锛歡eneral without TURBOSpecification:Material锛欰BS PlasticColor:Red and BlackInstallation Instructions:1:Wired Red Wire to postive battery terminal2:Wired black wire to negative terminal3:Fed swich wires(blue and green)through fire wall to accelerator pedal4:Attached micro switch to accrlerator pedal5:Connected switch to the normally closed terminal and earth terminal on micro switch6:Push accelerator fully in ,when releasing the speaker makes dump valve sound