Gutted Cat question
Thread Starter
Racer
Joined: Nov 2002
Posts: 300
Likes: 0
From: Perth WA
Gutted Cat question
I gutted my cat yesterday as I think it was adding to my overheating problems. The headers are now running a lot cooler now.
My question is for you guys with gutted cats, does your exhaust now have a tinny, echo chamber noise under the car? If so, what have you done about it?
Cheers
My question is for you guys with gutted cats, does your exhaust now have a tinny, echo chamber noise under the car? If so, what have you done about it?
Cheers
Safety Car
Joined: Jan 2001
Posts: 4,386
Likes: 689
From: Boise ID
Re: Gutted Cat question (timallard)
First off, I’m not a guy with a gutted cat. It seems with the gutted cat you now have a big-o-echo chamber sort of thing. I have heard of guys installing a pipe thru the cat so they keep the “smooth” airflow.
[Modified by 87SAM, 8:56 PM 1/18/2004]
[Modified by 87SAM, 8:56 PM 1/18/2004]
Team Owner
Joined: Sep 2002
Posts: 22,209
Likes: 12
From: OBAMA IS HITLER
Re: Gutted Cat question (timallard)
That booming sound is most likely due to the effect of the expansion of hot gases in the now effectively larger chamber area of your gutted (pre-cats I'm assuming), then the constriction of those gases at the exit pipe of the precats. Yup, you'll want to install "test" pipes in those cats to eliminate the problem and to smooth out the nasty turbulence caused with the destruction of the sweet honeycomb :D
Team Owner
Joined: Sep 2001
Posts: 62,140
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From: Athens AL
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Re: Gutted Cat question (timallard)
yeah its better to stick a straight pipe in the cat or have one welded to replace the cat altogether
