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Old 08-09-2003, 03:34 PM   #1
Scooby Newbie
Member#: 39941
Join Date: Jul 2003
Location: Binghamton, NY
2004 Impreza WRX STi

Default Quick Q: Drop in filter

Which drop in filter has better flow? The Perrin or the K&N? Has anyone ever tested and/or compared them.
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Old 08-09-2003, 05:18 PM   #2
NASIOC Supporter
Member#: 486
Join Date: Nov 1999
Chapter/Region: MAIC
Location: Roanoke, VA
2004 Forester XT
bug spattered


Be an STi pimp and get the STi upgrade filter. I understand that it flows very well.
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Old 08-09-2003, 06:28 PM   #3
Scooby Specialist
Member#: 35703
Join Date: Apr 2003
Location: Toronto, Ontario
2004 WRX STi
Blue/British Black 18's


Upgrade filter? Any info on this?
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