MUSTANG GT500 2010-2014 WHIPPLE STAGE 2 open filter inlet whine mod kit 75% WHINE INCREASE SKU 140 GT Foster SC Kit couples with

Foster SC Kit couples with part of the stock sound tubes – makes installation easy

Increases the in-cabin rotor sound by up to 50%

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

Foster SC Stage 4 Kit works on both closed air box and open filter or aftermarket CAI systems

sometimes on purpose (injected humour and the like)

MUSTANG GT500 2010-2014 WHIPPLE STAGE 2 open filter inlet whine mod kit 75% WHINE INCREASE SKU 140 GT Foster SC Kit couples withIncreases 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.