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Old 02-14-2011, 04:32 PM   #85
Scooby Specialist
Member Sales Rating: (5)
Member#: 261730
Join Date: Oct 2010
Chapter/Region: MAIC
2011 WRX hatch


from what i've read:

2.5" piping does not restrict power goals <400whp, so for power, change out your DP and tune it. Done. You don't need a catback.

Most people want to hear the rumble. A catback basically only does that. So this seems like the best way to get the sound we all want at a reasonable price.
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