9th Gen Civic Si Cold Air IntakeApplication: 12 15 Civic Si models Stock Manifold ONLY Features: 3. 5" inch piping Notes: Flashpro or KTuner is required and you will have to switch over to a MAP based tune if your choosing the 3. 5" pipe option Does not work with factory clutch line Does NOT fit R18 Engines Instructions: CLICK HERE Designed for the 2012 15 Civic Si with stock manifold and throttle body. The intake requires relocating the battery in front of the transmission to the