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^^ +1...It is all perspective, I don't care for the smell of running no cats and running no cats gets a little loud for me..
I don't believe you will see much HP gain at all with or without.
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2011 2SS/RS
Performance: 439 RWHP: 226/236 Comp Cam, Kooks 1-7/8, CAInc, Borla S type, Vmax TB, Rx Catch Can, Trans cooler, SLP 160 termo, Melling high volume, Eibach Springs/Sways 1" drop, Whiteline complete bushing kit.
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