MUSTANG GT500 2007-2009 WHIPPLE DS STAGE 4 open filter inlet whine mod kit 75% WHINE INCREASE SKU 155 M GT Increases the in-cabin rotor sound

Increases the in-cabin rotor sound by up to 100%

Increases the in-cabin rotor sound by up to 75%

Connects from inlet MAF housing induction pipe through the drilled firewall location

For driver’s side supercharger inlets setups

but also the leap into electronic typesetting

MUSTANG GT500 2007-2009 WHIPPLE DS STAGE 4 open filter inlet whine mod kit 75% WHINE INCREASE SKU 155 M GT Increases the in-cabin rotor soundIncreases the in cabin rotor sound by up to 75% Foster SC Stage 4 Kit works on both closed air box and open filter or aftermarket CAI systems. Drilling through the firewall required. 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. For drivers side supercharger inlets setups.