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NEW FOSTERSCMODS T-Shirts
Increases the in-cabin rotor sound by up to 25%
The Turbo spooling sound MOD will increase the natural turbo spool (whistle) blowoff valve (woosh) and deceleration pops and burbles on any Turbo application
Drilling through the firewall required
Foster SC Stage 4 Kit works on both closed air box and open filter or aftermarket CAI systems
Escalade 2007-2015 MAGNUSON STAGE 4 Inlet path SOUND TUBE KIT 75% WHINE INCREASE SKU 598 Universal Kits NEW FOSTERSCMODS T-ShirtsIncreases the in cabin rotor sound by up to 75% 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.
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