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.

HP Gain: +33.2
TQ Gain: +31.2
Replacement Filter: X-1013
EO#: PENDING

Notes: 2008 Impreza WRX 2.5L 4 Cyl. Incl. heat shield w/ AMSOIL Ea Nanofiber Air Filter