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Old 03-08-2013, 02:57 PM   #18
Acejam2k
Scooby Specialist
 
Member#: 42645
Join Date: Sep 2003
Chapter/Region: NESIC
Location: MA
Vehicle:
2007 STI
Crystal Gray Metallic

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Quote:
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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