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Old 09-25-2012, 01:40 PM   #5
the suicidal eggroll
Scooby Guru
Member#: 51961
Join Date: Jan 2004
Chapter/Region: RMIC
Location: Broomfield, CO
2005 STi
2012 WRX


You don't need a 3" downpipe, but you do want one without cats in order to raise the midrange boost.
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