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      01-16-2012, 11:38 PM   #4
kitw
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Drives: F91 M8, 991.2 GT3
Join Date: Jun 2007
Location: Bay Area, CA

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If you have a DCT car, both exhausts drone somewhat. (DCT likes to keep the RPMs in those levels when driving around slowly in auto mode)

The Vanguard got quite droney when used with any cat delete. I haven't run an AA myself but I've been in a car with the AA a few times. It sounds very nice, but it does make some boominess in the low rpms.
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