for some reason my car is always making a loud/very annoying rattle right by the cat and the header. I dont know know why it rattles. It has both bolts with springs on each side where the header collector and downpipe connect. Is it my cat that needs to be replaced??

 

Does it still have the heat shield connected?

 

I had the same problem. I got under my car last night and the bolts holding the heat shield around the exhaust coming off of the header had rusted through and was just hanging there. So I took it off and the rattle is gone.

 

If the heat shield is clear of the cat, a lot of the times on the cheaper "high flow" cat, the honeycomb on the inside breaks loose and that'll cause a nice rattle to make your car sound like **** .

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Syndacate &raquo;</TD></TR><TR><TD CLASS="quote">If the heat shield is clear of the cat, a lot of the times on the cheaper "high flow" cat, the honeycomb on the inside breaks loose and that'll cause a nice rattle to make your car sound like **** .</TD></TR></TABLE>

If you drive your car hard enough, ive seen them get completely blown out hollow, lol.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 97Ej6mike &raquo;</TD></TR><TR><TD CLASS="quote">

If you drive your car hard enough, ive seen them get completely blown out hollow, lol.</TD></TR></TABLE>

Test pipe ftw .

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Syndacate &raquo;</TD></TR><TR><TD CLASS="quote">

Test pipe ftw .</TD></TR></TABLE>

Removed a friends silencer off his buddyclub exhaust, and in doing so, i found a bunch of black furry stuff and honeycomb leftovers all bunched up behind it.... Cat had blown out, lolol

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 97Ej6mike &raquo;</TD></TR><TR><TD CLASS="quote">

Removed a friends silencer off his buddyclub exhaust, and in doing so, i found a bunch of black furry stuff and honeycomb leftovers all bunched up behind it.... Cat had blown out, lolol</TD></TR></TABLE>

Yeah I've seen that quite a few times. Sucky cats (ie. mine) ftl. The jacknuts that had the car b4 me put some no-name cat in it and now it's going out the door (rattling and ****)...and I'm not gonna spend 200 bucks on a new one...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Syndacate &raquo;</TD></TR><TR><TD CLASS="quote">

Yeah I've seen that quite a few times. Sucky cats (ie. mine) ftl. The jacknuts that had the car b4 me put some no-name cat in it and now it's going out the door (rattling and ****)...and I'm not gonna spend 200 bucks on a new one...</TD></TR></TABLE>

Carsound makes a quality weld-on one. Goes for about $110 on inlinefour.com.
Oem style and 50-state legal sticker on it. Have never heard of it failing inspection.