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Ships within 48 hours · Estimated delivery Aug 15 - Aug 20
No drilling through the firewall
Increases the in-cabin rotor sound by up to 100%
Foster SC Stage 4 Kit works on both closed air box and open filter or aftermarket CAI systems
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but opening the existing hole to 1/38” increases whine
MUSTANG GT500 2010-2014 SVT STAGE 2 open filter inlet whine mod kit 75% WHINE INCREASE SKU 135 M GT No drilling through the firewallIncreases 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.
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