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Old 10-21-2012, 09:59 PM   #12 (permalink)
tyler20c
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Join Date: Dec 2010
Location: Tampa
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On my Z I ran the Gemini with CNT test pipes and it sounded great and ran great for many miles. On my G37, I am running the CNT HFC and the stock exhaust, and it sounds like crap! Very raspy. Im not sure if their test pipes are better than their cats or what but i'm not happy with the HFC's.
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