MUSTANG GT 2015-2017 Whipple Cobra Jet Intake STAGE 4 Inlet path SOUND TUBE KIT 100% WHINE INCREASE SKU 505 UNK but opening the existing hole

but opening the existing hole to 1/38” increases whine

Connects from inlet pipe pipe to the OEM sound tube location

Increases the in-cabin rotor sound by up to 25%

Various versions have evolved over the years

No Stock sound tube required

MUSTANG GT 2015-2017 Whipple Cobra Jet Intake STAGE 4 Inlet path SOUND TUBE KIT 100% WHINE INCREASE SKU 505 UNK but opening the existing holeIncreases the in cabin rotor sound by up to 100% Drilling through the firewall required (bit provided) Sealed sound tube with special diaphragm cap installed on end of sound tube inside cabin. Connects from inlet MAF housing induction pipe through the drilled firewall location. No Stock sound tube required.