2003-2006 Nissan 350Z SP Cold Air Intake Black : Injen INJ-SP1986BLK
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.