It allows to blow the excess air outside allowing you to feel classic puff in release. It is installed on all engines 3-cylinder Citroen and Peugeot 1100 and 1200 turbocharged 3-cylinder
Plug and play emulator to be connected when the original Fiat 500 Abarth pop off valve is removed so that the "engine failure" warning light comes on when the original electric pop off valve is removed from the system.