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Old 01-10-2013, 01:15 PM   #3 (permalink)
TeamARK
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Join Date: Jul 2009
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depends what you are really going for and if the hiss sound will bother you or not. if you aren't bothered by the hiss sound a straight test pipe would be beneficial, if you want a refined tune you should check out some resonated HFC's, here's ours

Infiniti G37 Coupe/Sedan RWD R-Spec Hi-Flow Cats
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