Theres rattling when my car is cold at 1.5k rpm and im pretty sure its coming from the cat. something is probally loose inside. So i was just planning on replacing it. What aftermarket cat. would you guys recommend me getting?

 

anything hi-flow

 

are you sure its your cat and not a heat shield? also, there have been tests done on honda's, on superhonda and a high flow cat does nothing more than a stock one. unless you are using bigger exhaust. but for a cat-back, nothing.

 

Its most likely the heat sheild, get under the car and take a look.

 

+3 for heatshield

 

Very well could be the heat shield, and as always check something like a shield before you replace the cat. Also, there are numerous heat shields on the manifold (top and bottom part), cat, catback portion of the exhaust, and the car itself. Try to pinpoint the noise, and check out that area thoroughly. One more little note: I have seen the inside of the resonator come apart and make a very annoying rattling noise. A resonator is much cheaper than a cat for the most part. Good luck!


Modified by weavertime1 at 7:12 PM 12/23/2007

 

a hi flow cat will do nothing for an na car unless you are putting out a good amount of power. as for turbo, it will make a bigger difference

 

so i finally had a chance to get under the car, and it turns out the resonator is bad. so that means new cat back for me

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by weavertime1 &raquo;</TD></TR><TR><TD CLASS="quote">Very well could be the heat shield, and as always check something like a shield before you replace the cat. Also, there are numerous heat shields on the manifold (top and bottom part), cat, catback portion of the exhaust, and the car itself. Try to pinpoint the noise, and check out that area thoroughly. One more little note: I have seen the inside of the resonator come apart and make a very annoying rattling noise. A resonator is much cheaper than a cat for the most part. Good luck!


Modified by weavertime1 at 7:12 PM 12/23/2007</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDMEK9R &raquo;</TD></TR><TR><TD CLASS="quote">so i finally had a chance to get under the car, and it turns out the resonator is bad. so that means new cat back for me </TD></TR></TABLE>

Damn I'm good!