ND Mazda MX-5 Sound Tube Mod

Many individuals prefer to eliminate their sound tubes, while others opt to amplify them. The firewall adapter utilizes a 1-1/4x20" Continental universal radiator hose, which can be easily obtained from your local auto parts store, and connects to the original hard plastic junction. The "diaphragm" is positioned between the OEM Mazda tube and hose and acts as a seal, preventing intake from entering the system.