2008-2009 BMW 128i/07-09 328i/2006 330i SP Series Cold Air Intake; w/ HeatShield by Injen (SP1121BLK)
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.