This is a 3D printed velocity stack that goes inside the Gruppe M intake housing to improve the airflow within the intake and stop it from causing turbulence upon intake. This will help alleviate the idle issues and also improve performance. Made out of high temp resistant PET-CF17. Comes with install hardware. Please let me know which version of the intake inlet you have in the order notes. You can see the last photo for reference. NOTE: The bolts securing the stack need to be tightened to 5nm If you use this link it will show you how to install it: https://youtu.be/Xjp7AKCxA7I?si=fcH1CqHaLyqC96v1
