The MR Technology intake system for the E90 E92 335i E82 135i with N55 engine features 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. The Injen SP Series is The World's First Tuned Intake System.
MR Technology (Tuned intakes to factory air/fuel ratios) (patent #7,359,795)
Dyno-Tuned Air Intake
Molded functional front air scoop
Injen/AMSOIL Ea Nano-Fiber Dry Media Air Filter
Mandrel-bent aircraft aluminum alloy
Available in a custom Wrinkle Black and Polished finish