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Old 02-12-2013, 05:58 PM   #2147
toph
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Member#: 78640
Join Date: Jan 2005
Chapter/Region: NESIC
Vehicle:
08 STi SSM 3.5XT-R
15 WRX 6MT Limited CBS

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Originally Posted by BradX978 View Post
Unfamiliar with this? Will this still be as effective for air flow when quiet as opposed to open? Any info threads on this so I can read up?
No it will definitely be more restrictive when it's closed compared to open. The cut out isn't designed to make noise, it's designed to reduce exhaust path, in turn increasing power. If you search there should be plenty of info on it.
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