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-   -   how to make oem cat into a high flow one (https://www.rx8club.com/series-i-tech-garage-22/how-make-oem-cat-into-high-flow-one-109362/)

Phish806 11-01-2007 02:35 PM

i live in iowa.... no emission testing what so ever ... i just want the no CEL otherwise i would just punch it or get a mid pipe

dmc27 11-01-2007 04:36 PM

Y'all never cease to amaze me with the creative genius. I have nothing to offer but a NT style "Good Job!"

Carry on. :)

morkusyambo 11-02-2007 06:33 AM

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.

LARx8 09-18-2010 08:57 PM

I'm thinking using an air hammer could make this a little easier. Anybody have trouble with doing this??

Targatheory 09-18-2010 09:44 PM

hi.

cfm251 10-31-2010 12:16 AM

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?

wiesel42 03-14-2013 07:22 PM

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.....

TeamRX8 03-14-2013 10:29 PM

as anyone ever quantified that it made any difference?


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