Injen SP Series Polished Cold Air Intake for 2006-2011 Honda Civic Si - SP1578P

Fits 2006-2011 Honda Civic Si and 2008 Honda Civic MUGEN Si.

Unlock the performance potential of your 8th Gen Civic Si with the Injen SP series cold air intake. As Injen Technology's flagship aluminum intake system, the SP series utilizes 6061-T6 mandrel-bent aluminum tubing to provide a smooth, unrestricted path for incoming air. This system is engineered using patented MegaRam (MR) and Air Fusion technologies, which allows the intake to be precisely tuned to maintain safe air-to-fuel (A/F) ratios across the entire power band without requiring additional ECU calibration.

The SP1578P is dyno-proven to deliver gains of up to 11 horsepower and 12 lb-ft of torque. It comes equipped with a fully serviceable Injen SuperNano-Web dry air filter (X-1014-BB), which offers superior filtration efficiency and airflow capacity. Proudly manufactured in Pomona, California, this system includes a polished finish and all necessary hardware for a direct-fit installation.

• 6061-T6 aluminum intake tubing with a polished finish
• Dyno-proven gains: up to 11 hp and 12 lb-ft of torque
• Patented MegaRam (MR) and Air Fusion tuning technology
• SuperNano-Web dry air filter (Part #X-1014-BB)
• CARB EO #: D-476-8 (Street legal in all 50 states)
• Aggressive engine tone under full throttle
• Compatible with optional hydroshield (1033BLK or 1033RED)
• Includes Injen Technology Limited Lifetime Warranty
• MPN: SP1578P