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Old 02-25-2008, 01:54 PM   #8
Scooby Guru
Member#: 141373
Join Date: Feb 2007
Chapter/Region: E. Canada
Location: Quebec, QC
2008 2.5i-hatch -
now with a HID retrofit


Not from the exhaust side. Though after youtubing the sounds of an STi catback + OEM vs Sti catback + Borla, there IS a difference.

The main increase in the volume is from the engine bay ... the headers are just soooo thin!
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