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How much HP 2.5 exhaust?
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11-06-2013, 08:22 PM
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BlaqWhole
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Drives: 2017 Camaro ZL1 A10
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Oh, and Bo, did you ever modify that OBX exhaust to be a full 3 inches? Or does it still have that 2.5 downsize at the connection of the cat-back?
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