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Old 03-08-2013, 02:57 PM   #18
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Member#: 42645
Join Date: Sep 2003
Chapter/Region: NESIC
Location: MA
2014 Audi S4
Brilliant Black


Originally Posted by Snowphun View Post
I thought the only problem with the OE UP was the cat? Once removed it flowed well enough that an aftermarket unit isn't much (if any) improvement?

None of the aftermarket pipes are larger diameter, right? The EM and turbo inlet sizes aren't changing.
A 244 to 292 CFM improvement was good enough for me!
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