Scorpion Exhausts Non Resonated GPF deleteNote: Required when installing Scorpion GPF Back Exhaust The GPF Delete is required when installing exhausts from Europe on Australian cars. Overseas all i20N models are equipped with a GPF (Gasoline Particulate Filter) which sits between the front pipe and cat back exhaust. As Australian cars do not have a GPF the factory cat back exhaust is longer and connects directly to the front pipe. As the Scorpion Exhaust is designed to suit GPF cars the