Injen Polished Cold Air Intake Honda Civic SI 2006-2011 | SP1578P Impreza_2008-2011 COBB Knob Height: 2

COBB Knob Height: 2

Part #: STF-SO-WRX1517

filling those stupid voids on the stock bushings

The other contributing factors to our air flow increase are our precision-adjusted MAF housing and improved airbox

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Injen Polished Cold Air Intake Honda Civic SI 2006-2011 | SP1578P Impreza_2008-2011 COBB Knob Height: 2Part #: SP1578P The Injen SP Series Intake systems Feature the Patented MR Technology Process for Optimal Gains and a safe A F ratio. The Injen SP Series Intake is The Worlds First Tuned Intake System. Cold Air Intake System Incl. Tubing Filter Hardware Instruction w MR Technology HP Gains +10. 7 HP Torque Gains +11. 2 ft. lbs. Polished Product Features Tuned Short Ram Injen Heat Shield w Top MR Technology Patented Tuning Process SuperNano Web Dry