Injen (t) 2.5L Polished Cold Air Intake | 2008-2013 Subaru WRX/STi (SP1204P)

SP Series Intake System:

The Injen SP Series Intake Systems Feature the Patent Pending MR Technology Process for Optimal Gains and a Safe A/F Ratio. The Injen SP Series Intake System does not limit itself to just a Cold Air System or Short Ram System. The MR Technology process has its effects on both types. The Injen SP Series Intake is The World's First Tuned Intake System.