ART Pipes are great but I woulnd't use them for FI personally as they will definitely not breath enough. I'd go with a 3" or bigger test pipe.
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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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