This Induction Kit for The Mk5 VW Golf 1.4 TSi, replaces the original filter and air box to improve the breathing of your engine. Unlike many aftermarket induction kits, this kit maintains the Intake of Colder Air to ensure that performance gains achieved through using a free flowing filter are not lost by drawing in warmer air from the engine bay. Users of this kit have reported back on the ease of installation and a sportier sound without being obtrusive.