From the testing Stillen performed, they found that a Y pipe design yields the best gains on this car in both hp and torque. I personally think that choosing between an h pipe/y pipe/x pipe is splitting hairs on a performance based view point, but the sound they produce is different.
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-320whp / 259wftlbs-
SP Rays -- RE-11s -- SpecialtyZ Tune -- Swift Springs -- Stillen 25R Oil Cooler -- Stillen G3 Intakes -- Berk HFCs -- F.I. 12" CBE -- Stillen Sway Bars -- Es14 Spring -- INGS+1 lip -- CF Spoiler -- GTR Start Button -- VLED Parking Lights -- PWJDM V2 shift knob
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