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Old 03-09-2012, 05:23 PM   #1330
Scooby Specialist
Member#: 284420
Join Date: Jun 2011
Chapter/Region: SWIC
Location: Lakewood, Ca
2011 WRX Sedan


Read the same thing. But I've also been told you need the grim speed solenoid and then it can be tuned out. The popping is really common in exhausts that are extremely restrictive a guess. It gets worse the more you open it up it seems. Catted seems to just make things easier and I've heard the cat really doesn't hurt gains all that much.
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