GrimmSpeed 060051 Black Cold Air Intake System for 2008-2014 Subaru WRX/STI Hybrid Cold Air/Short Ram Design - Combining the advantages and eliminating the negatives of both traditional intake designs Air straightener - Dimensionally mimics the factory configuration for accurate MAF sensor readings MAF sensor location - Inside heat shield, isolated from engine bay heat Custom reusable high flow air filter - Integrated velocity stack entrance smooths incoming air 30min Installation