hi i have this black cylinder thing under the slam panel above my radiator with hoses coming from it into the engine and radiator it makes a buzzing noise anyone know what this is and if it should buzz iv only had the car since sat and dont know much about it it has a revo stage 1 remap dynatwist air filter some other little green filter goin under the engine somewhere a forge 007p dv thats all i know im just a bit confussed about this black cylinder
cheers john
cheers john