P2R intake resonator delete for 12+ Honda Civic Si. Custom sized red rubber cap and stainless steel worm clamp both made in the USA offer a high quality solution to remove your air intake resonator. The original Honda intake for this vehicle is a well engineered piece. The P2R resonator delete helps you to retain the Honda lower section of the intake so that you can continue to take advantage of Honda's engineering while adding some sound to your intake to make your engine sound more beefy.