banging out the cat...help!
Supreme Member
Joined: Aug 2001
Posts: 5,388
Likes: 2
From: Caldwell,ID
Car: 2005 BMW 545i
Engine: 4.4L N62B44
Transmission: 6spd auto
Axle/Gears: Rotating
better yet just have a straight pipe put in. lot better gains and sound from a straight pipe
cost you maybe 40-60 bucks
and also if they ever pass smog in your area you still have you cat so you dont have to go out and buy a new one
cost you maybe 40-60 bucks
and also if they ever pass smog in your area you still have you cat so you dont have to go out and buy a new one
well I just took off the one end of the pipe. the other had a u-bolt and I know those never come apart and back together again. Im almost done. theres 2chunks that wont break up small enough to come out. and there is no metal screen and pellets. its like a light weight ceramic material with tiny holes all the way through.
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iTrader: (2)
Joined: Jan 2002
Posts: 9,962
Likes: 5
From: Moorestown, NJ
Car: 88 Camaro SC
Engine: SFI'd 350
Transmission: TKO 500
Axle/Gears: 9-bolt w/ 3.23's
You must have a monolithic cat then... They flow better then the older bed type but now that its gutted i dont think it really matters
Senior Member

Joined: Mar 2001
Posts: 841
Likes: 3
From: Silverhill,Al
Car: 92 Camaro RS
Engine: 305 TBI
Transmission: T-5
I used a piece of steel rebar on mine but you would be better off just adding a hi-flow cat to it, it will sound better than a gutted cat and make more power also, a gutted cat causes a lot of turbulence unless you add a pipe inside it. I gutted mine when it went out and it sounded awful but after I put a good cat on it, I had more power and it sounded much better.
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UltRoadWarrior9
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