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Old 10-05-2012, 09:26 AM   #6500
Scooby Specialist
Member#: 282204
Join Date: May 2011
Chapter/Region: NESIC
Location: Northeast CT
2011 5 Door STi
Plasma Blue Pearl


Originally Posted by smeerone View Post
8cm or 10cm?
ok take what you will from this but:

in General 10cm

8cm if auto-x or quicker spool, but 10cm for better top end and better breathability.

(please note this is from my research but no actual first hand knowledge. Just lots of research and talking with 2.5xtr owners...)
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