Broken Up Cat = HP Loss ?
Thread Starter
Senior Member
Joined: Jul 1999
Posts: 760
Likes: 3
Broken Up Cat = HP Loss ?
As far as I know , my cat is NOT clogged, but, the insides of my cat rattle a lot when you bang on the bottom of it. Does this restrict flow or open up flow ? Is it moving out of the way of the exhaust flow, or into the way ??? I have noticed the car seems less quick since I bought it 3 years ago, but I thought maybe I was just getting used to a fast car. 
------------------
88 GTA 5.7 TPI Charcoal Grey Bone Stock except for loose muffler which makes it a bit louder
than normal.
------------------
88 GTA 5.7 TPI Charcoal Grey Bone Stock except for loose muffler which makes it a bit louder
than normal. 
Supreme Member
Joined: Dec 1999
Posts: 1,237
Likes: 1
From: Reno, NV
Car: yep
Engine: uhuh
Transmission: sure does
Yes, it can restrict flow, usually the pieces will turn sidways and block the exit pipe.
They can also come completly out of the cat and clog the muffler.
------------------
ASE Mechanic/Machinist/Smog Tech
1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R
and 2 POS commuters...
R.I.P. #3
"He can see air"
They can also come completly out of the cat and clog the muffler.
------------------
ASE Mechanic/Machinist/Smog Tech
1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R
and 2 POS commuters...
R.I.P. #3
"He can see air"
Joined: Dec 1999
Posts: 5,964
Likes: 37
From: Hacienda Heights, CA
Car: 90 RS 'Vert, 88 IROC-Z, 88 Firebird
Engine: 305 ci tbi, 305 ci tpi, 350 ci tpi
Transmission: WC-T5, WC-T5, 700R4
Axle/Gears: 3.45, 3.27, 3.27
Yes it can restrict. The ceramic honeycomb matrix has broken. I discovered this when I replaced mine. One portion had come lose and turned sideways so instead of being aligned to the flow it became a big restriction.
Thread
Thread Starter
Forum
Replies
Last Post
no green
Engine/Drivetrain/Suspension Parts for Sale
11
Jan 9, 2016 09:22 PM
