The EGR system has the function to lower NOx emission. Unfortenately there are a lot of disadvantages, such as increased soot, CO and HC emissions, lower mileage and less power. Also obstructed intakes caused by severe sooting is a big problem. By replacing two gaskets from the EGR system with these blocking plates the system can be disabled easily and effectively. An improvement of the driveability will be directly noticeable. Suitable for 2.4 10v euro 3 JTD engines (modelyear 2000-2007): Alfa 156, 166, Lancia Lybra, Thesis (140/150 HP). For newer euro 3 engines it could be neccesary to modify the mapping.