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      01-22-2013, 09:24 AM   #40
dmk08
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Drives: 16 M4 ZCP
Join Date: Jul 2012
Location: Atlanta

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Sorry to bump an old thread but there is something I can't seem to pinpoint.

Are the HP gains much more with Primary Cat delete than they are with an x-pipe with High Flow cats? Lets say test pipes vs a challenge sport with high flows.