Eventuri Carbon Intake System Replacement Filter - Type 4.0TFSIReplacement air filters for your Eventuri Carbon Intake System. Unlike many other intake companies who use a generic filter, Eventuri has carried out extensive R&D and invested significant funds into their own unique filter design so that it is optimized in a Patent Pending reverse mounted configuration. The filtration medium is constructed from non woven mesh and is ISO 5011 tested which conforms to the same filtration standard as OEM filters. The