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Old 12-22-2011, 04:16 PM   #4
bmorecam
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Drives: jealous vendors mad!! HAHA!!
Join Date: Jan 2011
Location: CYBERGMONSTER@GMAIL.COM
Posts: 3,658
Thanks montreal.. this exhaust has zero drone/rasp. Probably one of the best sounding exhaust too.

chevrolet, just do a search on helmholtz here on this forum or google. There's tons of explanation on how it eliminate bad frequency.
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