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Old 06-25-2013, 12:12 AM   #8
trw427ss @ Futral
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Drives: 2013 2SS/RS L99
Join Date: Oct 2012
Location: Denham Springs La.
Posts: 693
Originally Posted by CamaroSS408 View Post
cut outs too?
NPP exhaust has a vacuum control cut out built into the muffler ( duel mode exhaust). ZL1's and 1LE cars have this.
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