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Old 06-18-2012, 11:18 AM   #10 (permalink)
Ecain18
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Join Date: Jun 2012
Location: Hummelsown, pa
Posts: 107
Drives: 2008 g37 k51 6mt
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Power is huge with these. Its a big difference. I went from A stillen catback and gen 3 to these with r2c intakes and the mid-upper rpms it screams and pulls much harder. Im back to the stock manifolds with berk hfcs and it feels like it did with just the stillen catback.
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