Performance Air Filter for Honda Civic VIII Type R (2007-2011) 2.0L EngineUnleash the K20Z4: High Flow Performance Intake Filter for Honda Civic VIII Type R Who Its For: Engineered for Honda Civic VIII Type R owners running the high revving K20Z4 powerplant who are tired of the stock airboxs restrictive breathing habits. The Symptom: The factory intake system on the K20 series engine is designed to meet strict drive by noise regulations, which often means using dense, multi layered paper filters that create significant