well....I'm still waiting for rick to get back with me.......waiting....waiting..

you know come to think of it. mine goes away after a few minutes of driving once the cats get heated up. the colder it is the longer it lasts. kinda odd lol. its not really that loud of a sound though so half the time i even forget its there

for the record, this isnt only on the metallic cats. andrew has ceramic cats from fast intentions and it does this as well.

*subscribed*

was planning on getting these also, want to see outcome

Anything from Rick or Tony ??

Sounds like bad cats....seriously.

I smashed a ceramic cat on another car a while ago and it made that ZZZZZ rattle noise.

But why would it make that sound for the metallic cats too?

Very weird.

zzzzzz rattling noise = rasp?


or am I out of the picture here..

still waiting on rick to get back with me. Hopefully he can jump in and enlighten all of us here. interms of the temp relation of the cats to the noise, yes, it does go away a little, BUT overall the noise is still present.

No, the ZZZZZZzzzz/ rattle noise is not a rasp. Its completely different.

Rasp is really common on all HFC..
while Rattling is another story

Ill call Tony on Monday and talk to him about this. He and I are in close contact. Ill ask him whats up and see what he has to offer and post here with an update.

^ sounds good.

Hey all -

You guys still have flex joints on your cars???? They get loose after a bit from the expansion and contraction. The increased heat and velocity and new pulse arrangement cause them to make noise sometimes. After they warm up and get tight again...noise goes away. If they are older or many miles on the car - they can make more noise or it wont go away.

Let me know if this helps ya!!

Rick

so will it go away when i get my HKS exhaust next week?