Miata Turbo Forum - Boost cars, acquire cats.

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-   -   How to tell if your cat is clogged? (https://www.miataturbo.net/general-miata-chat-9/how-tell-if-your-cat-clogged-24075/)

Braineack 07-27-2008 10:19 PM

http://boostedmiata.com/blown_engine/hot_cat.jpg

vVind 07-27-2008 10:21 PM

wow how is that cat so hot? which cat is that?

M-Tuned 07-27-2008 10:26 PM


Originally Posted by vVind (Post 288688)
wow how is that cat so hot? which cat is that?

I'm going to guess that it is clogged! :firedevil

mtncrvr 07-27-2008 10:51 PM

A friend of mine on a track day removed clogged cat and jabbed the crap outta it with a long screwdriver, problem solved (of course if you don't have emissions tests).

paul 07-28-2008 09:29 AM

Marc, any difference in spool with that cat swap?

Braineack 07-28-2008 09:32 AM


Originally Posted by Marc@M-Tuned.com (Post 288690)
I'm going to guess that it is clogged! :firedevil


sure was!


this is what happened when i simply dumped it out....

http://www.boostedmiata.com/blown_en...logged_cat.jpg


suffice to say, it got the broom handle treatment.

paul 07-28-2008 09:41 AM

So those chunks came out before you went all Justin Volpe on it?

Braineack 07-28-2008 09:46 AM


Originally Posted by paul (Post 288851)
So those chunks came out before you went all Justin Volpe on it?


yep

M-Tuned 07-28-2008 09:53 AM


Originally Posted by paul (Post 288844)
Marc, any difference in spool with that cat swap?

Ont the SRT4 I personally watched there was zero difference in spool. The dyno chart looks the exact same. 1hp difference is so minor. I was freaking amazed!

Torkel 07-28-2008 10:37 AM

Yes, modern Cats flow so well removing them is very hard to justify. To gut out a clocked cat or to save the cash of having to buy a new, I guess can be explained. But I personally, I think gutting a fully working cat to get a 1% improvement in power, as I have seen people do, is just unbelievably selfish.

Just my 0.02. *stepping of soap box*


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