how to make oem cat into a high flow one
#103
Dongbag extrordinare
Join Date: Nov 2004
Location: Away from the fruits of my labor
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I believe someone alluded to this on the first page of the thread. I had the cat cut out behind the front flange and in front of the stock resonator. A straight pipe was the welded in w/o2 bung for future use. Only cost me $35 and the guy who did it said if I ever need the stock cat to bring it back and he'll weld it back in. The best part is the car sounds just like stock.
#106
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Join Date: Nov 2007
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I did this and reinstalled, sounds good, drives good, but when it idles some whiteish smoke comes up into the engine bay. I think its some of the fiberglass packing. Should I worry or will it burn itself out?
#107
Well as Stealth said...i get a big fat FAIL. I removed my cat and started removing the rear substrate. Today, i went to finish and cracked the front substrate and took a big hunk out of it. Thank goodness, I had already ordered another cat from Advance. Before you'll start flaming me for buying a cat from Advance it was only $234 bucks with a 5 year warranty. I put it on and now i'm back in business.....
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