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
Great low throaty sound at 3,000 rpms. You can feel it working when you hit the 3,000-4,000 rpm range. No more bog like the other SRI’s on the market. Fittment is awesome, as well as construction.