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View Full Version : Does this look badly clogged?



ElliottG
04-26-2013, 07:45 PM
Hey guys

I took my cat off to fix something on my turbo a long time ago and it's starting to dawn on me that I should maybe gut the cat...my car boosts to 17psi but it always feels like there's something choking it off even though it's boosting all the way...here's a pic of when I took it off before :

http://184.154.165.18/~devilthe/uploads/1345283533.jpg

Watcha think?

Thanks,
Elliott

D's Avant
04-26-2013, 08:08 PM
Why not just go HFC? One of the best mods after a chip I did to my B5.

My cat's cells looked more open if I remember correctly. Is this the original cat?

GOODBYNAAIR
04-26-2013, 08:40 PM
chocking is just the stock cat period. when I put my TP in the car was much happier to spool and pull as hard as 18psi k03 can lol.

ElliottG
04-26-2013, 08:57 PM
Why not just go HFC? One of the best mods after a chip I did to my B5.

My cat's cells looked more open if I remember correctly. Is this the original cat?

Cheaper for the moment...Yup it's the stock cat...guessing original too...

I'll probably get one eventually because I hate the gas smell with a gutted cat...had it on my Passat and it sucked...but I can't stand this "power drain" or whatever you want to call it any longer...it's very strange...car boosts fine, but doesn't pull...


chocking is just the stock cat period. when I put my TP in the car was much happier to spool and pull as hard as 18psi k03 can lol.

Lol yeah...just wondering if mine looks abnormally clogged.

Forgot to mention that I am getting a "cat efficiency: below threshold" code.

ElliottG
04-27-2013, 09:10 PM
Bump. Any other opinions on this?

audinutt
04-27-2013, 09:36 PM
Yes it is clogged, btdt on my b5

Sent from my cm_tenderloin using Tapatalk 2

ElliottG
04-28-2013, 09:31 PM
Yes it is clogged, btdt on my b5

Sent from my cm_tenderloin using Tapatalk 2

Did you end up gutting it or putting in a HFC? I'm dreading the potent gas smell after gutting...

walky_talky20
04-28-2013, 09:48 PM
The 2001 cat is the most restrictive. They "updated" the cat for 2001 to gain ULEV status, hence it's squirrely cell layout instead of the usual usual straight cells like this:

http://toyotamotorhome.org/forums/uploads/1123363484/gallery_1_58_123213.jpg

That said, yours does look like it's starting to clog up a bit, perhaps. I swapped my '01 cat for a Labree HFC and it helped quite a bit. I gained 3psi of peak boost.

Seerlah
04-29-2013, 03:10 AM
Loved my Labree HFC. When I was bolt on stage 1, my exhaust was one of my favorite mods (resonated Milltek with Labree HFC).

98A4TurboAWD
04-29-2013, 06:02 AM
That cat is clogged and needs to be gutted.

terraflata
04-29-2013, 03:29 PM
X2 on gutting it, if you have access to a good sandblaster, you can gut this thing easy.

flynnr
04-29-2013, 05:02 PM
Don't gut the cat. It is very dangerous.

If I were you, I would bring your cat to a recycling center and cash it in. I got $150 for my cat from the 200 avant, and $95 from the one from my coupe quattro.

Use the $100ish that you get and put it toward a legit hfc/test pipe. You won't regret it.

ElliottG
04-30-2013, 03:39 AM
Thanks guys. For the people who have gutted their cats, do you have the distinct gas smell from the exhaust?


flynnr, I'm curious as to why you say a gutted cat is very dangerous? What makes it different from a test pipe other than exhaust flow?

walky_talky20
04-30-2013, 05:19 AM
I think he means the health risk: breathing in the poisonous dust from the catalytic converter while you are smashing it will shorten your life.

Turbwhistle
04-30-2013, 05:26 AM
Thanks guys. For the people who have gutted their cats, do you have the distinct gas smell from the exhaust?


flynnr, I'm curious as to why you say a gutted cat is very dangerous? What makes it different from a test pipe other than exhaust flow?

If you are considering gutting the cat, just order a ebay test pipe with a o2 spacer, then you will won't have a check engine light, and you will get better spool.

Scrap the stock cat for about $100, and get the ebay tp which is about $90, and another $10 for the spacer. Then chalk it up as a performance mod.

Stranger
04-30-2013, 05:39 AM
Just scraped my stock cat for $80 yesterday, it paid for the test pipe and I did not have to sit there with an air hammer smashing my stock cat. You can also make a an 02 spacer out of spark plug non foulers, cheap and easy.