Increases the in-cabin rotor sound by up to 75%
Foster SC Stage 2 Kit works on both closed air box and open filter or aftermarket CAI systems.
No drilling through the firewall required, but opening the existing hole to 1/38” increases whine.
Connects from inlet pipe through the OEM sound tube location.
Sealed sound tube with special diaphragm cap installed on end of sound tube inside cabin.
No Stock sound tube required.
