Yeah. I think what you're hearing is just the sound swirling around and/or trying to escape the resonators? That was my guess.. I think I kind of hear what you're talking about but I don't really notice it.
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2007 350Z HR :: 3.7 Final Drive : Injen Long-Tube Intakes : TurboXS Cat-Back : Eibach Sportline : Enkei RPF1 18x9.5/10.5 +15
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