All my cars have k&n cold air kits. The fact that you don't buy air filters is worth the cost of the system, and the fact that you get extra horsepower is a bonus. The system was easy to install and you immediately felt the difference.
π§ Improved Performance: K&N Cold Air Intake Kit for 2007-2009 FORD Mustang GT (63-2565)
9 Review
π Silicone Throttle Body Hose for Subaru WRX 2008-2014 - Mishimoto MMHOSE-SUB-ITBBK (Black)
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69 1018TS Performance Intake Kit
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π§ Enhance Performance with Spectre 8711 Vacuum Sensor Adapter Kit
9 Review