2008-2012 Subaru WRX / STi SP Cold Air Intake Polished : Injen INJ-SP1204P
SP Intake Systems
These Intake Systems Feature the Patent Pending MR Technology Process for Optimal Gains and a Safe A/F Ratio. The SP series does not limit itself to just a Cold Air System or Short Ram System. The MR Technology process has its effects on both types. SP is The World's First Tuned Intake System.
