Injen 18-21 Subaru WRX STI H4-2.5L Turbo SP Aluminum Series Cold Air Intake – Wrinkle Black

The SP series of cold air intakes is Injen?s flagship system in their lines of traditional aluminum cold air intake systems. Injen Technology is the world?s first tuned air intake system and holds four (4) patents on the tuning process of an intake system, something no other manufacturer can claim. The SP series of cold air intakes feature many of Injen Technology?s patented tuning process, including MegaRam (MR) Technology (Patents 7,359,795 and 7,669,571), Air Fusion (Patent 7,721,669), and many other innovations that keep Injen Technology at the forefront in the performance aftermarket.