The KAZE Cold Air Intake System is designed to significantly improve the intake efficiency of your Honda CL9. Extensive research, totaling hundreds of hours, has been conducted to determine the optimal resonant frequency that aligns with your CL9 intake manifold pulses. By matching the manifold pulse frequency, the system effectively generates positive intake pressure of 0.5 to 1psi at wide-open throttle position, providing an additional boost to your vehicle's performance. The full kit includes all necessary components for easy installation, with the exception of the air filter, allowing you to select a 3-inch inlet air filter that suits your preferences. The system is designed, tested, and manufactured by HDi. For further information, please contact sales@hybrid-power.com.