18 Dodge Challenger with 2.9L Whippe Supercharger before and after test with FosterSCMods.com supercharger sound tube whine mod kit. This kit increase supercharger whine on any twin screw compressor or positive displacement type supercharger. Foster SC has developed the first product to ever target and increase the natural rotor whine via a custom supercharger sound tube system. Order your kit today at FosterSCMods.com and follow us on Instagram at Fostang6g. Call/text Shawn at 207 231-4112 for details and questions.
