Tengoku

Where can I buy Asura cats?

RedSex2k

Definitely the catalyst material inside breaking apart. I had an aftermarket cat on a previous car that split into pieces and sounded just like that. Time for a test pipe.

Ultimate_Combination

Tengoku- thanks for posting the video which helped obtain strong possible tips from many of you.
This little clanging rattle started on me last week. I thought it was my exhaust rubber hangers, so I adjusted them while I had my car on the jackstands doing my oil/tranny/diff fluid changes this weekend but the sound is still there strong as ever- under idle and at a faster pace around 3k-4k ish.
Now I will definitely have to check the CAT because this very well could have been the issue I've had with a certain 'speed' issue over a year ago- which I thought had cleared up on it's own, but may be back...

silverst0ner

do you have any idea of what could have caused the rattle? lets say maybe you installed something new, drove the car through some bad weather, or in my case... as i was changing lanes, i scrapped the under part of my car on some uneven elevated pavement (stupid shitty ass LA roads and my car is a lowered just a bit). after i started to hear some rattling in low speed acceleration/idling...

sillyboybmxer

Is there any difference between an 06 cat and 04?? Debating using my friends 06 on my car or getting a high flow cat.

SpitfireS

The only difference between MY'00 converters and the later ones (>MY'04) is the position of the sec O2 sensor.
All of my OEM converters (and I have 3) have failed at some point.
They destroyed 2 secO2 sensors too.

Car Analogy

...and although o2 sensor location is different, the wiring is long enough to reach. So using any year cat is a simple bolt on operation.

sillyboybmxer

thanks guys,...im trying to make sure that it is the cat rattling before i buy anything.
When I knock on the cat i can hear movement inside, that is pretty much a dead giveaway correct?? Nothing should move in it if its 100% perfect right? I couldnt find any heat shields loose anywhere on the car and can only get the rattle once in a while.

SpitfireS

That's how it starts.. a rattle once in a while.
Then CEL's start to show up.
It ends with you buying a new secO2 and a new (or another) cat.

Repeat.

sillyboybmxer

Would you recommend just going with a Berk Hi Flow or Asura cat now Splitfire?.....I wouldnt mind finding a low mileage oem cat(my friend put his back on some im out of luck there) but I feel you dont know the history of them even if "low mileage". With all these super slammed hella flush ride as low as you can people, I feel the cats have been smashed on speed bumps already and its only a matter of time before I do it again like you.