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Old 05-03-2012, 09:26 AM   #8

KMPrenger's Avatar
Drives: 06 Colorado, 16' SS on order
Join Date: May 2009
Location: Jefferson City, Missouri
Posts: 10,838
Originally Posted by bluecam805 View Post
well its alot cheaper too. im gonna get my cats taken out and ask to get the biggest down pipe for maximum air flow.. $120 for BOTH . hopefully i get alota gains
Originally Posted by bluecam805 View Post
yeah im skeptical myself . not too big but probably 2.5 or so. im not sure the size now. ill see tomaro
I really don't think I'd go with bigger than stock pipes to replace the cats, and instead go with the stock size. I can't say forsure, but I'm guessing it is the same size as the beginning of the catback...which is 2.5"

I don't see how you couldn't get gains from removing the cats, or at least adding HFCs. Its been proven on the LLT.
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