Replace stock cats?
Thread Starter
Safety Car
Joined: Sep 2004
Posts: 4,762
Likes: 0
Replace stock cats?
Has anyone replaced just the stock cats? I don't want to replace the whole section since I'm cheap. Is it a worthwhile mod and how difficult is it? Also, how much can I expect to spend if I do it myself. I'm planning on removing the precats and opening up the holes in the H pipe, thought I might do this as well. Any replies would be greatly appreciated. Thanks.
Safety Car
Joined: Jul 2002
Posts: 3,874
Likes: 0
From: Fishing Somewhere Cold
St. Jude Donor '11-'12-'13, '15
YOu can probably get 5-7 hp by losing the cats and replacing with Random tech hi flow cats....but they cost like over $500.00 a set...maybe you want to do some more work with them to make it count, like Longtube headers!!! 
Thread Starter
Safety Car
Joined: Sep 2004
Posts: 4,762
Likes: 0
I didn't realize the cost was that high. One of the vendors sells the whole section (with X-pipe) for about 700. I guess I may be better off going that route. Gonna have to start saving my pennies. Thanks for the input.
Race Director
Joined: Sep 2001
Posts: 13,292
Likes: 0
From: Hockessin Delaware
Originally Posted by MJD
I didn't realize the cost was that high. One of the vendors sells the whole section (with X-pipe) for about 700. I guess I may be better off going that route. Gonna have to start saving my pennies. Thanks for the input.
Team Owner
Joined: Jul 2003
Posts: 20,474
Likes: 2
From: Detroit
What are your mods? Hi-flow cats aren't going to give you very much at all in terms of performance. Certainly not enough to justify $500. My 'hi-flow' cats were destroyed in under 2000 miles.. ProChargers and cats apparently don't get along 
.
Mark
.Mark
Thread Starter
Safety Car
Joined: Sep 2004
Posts: 4,762
Likes: 0
Right now I don't have any mods. I just got my car about a month ago and I'm trying to get an idea of what I want to do. I don't have a spare 1500 for a full header system, just a couple hundred here and there to play with right now.
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Drifting
Joined: Mar 2001
Posts: 1,471
Likes: 1
From: Pensacola FL
I'd start with an intake first, than do the exahust. I'd wait & do headers and cats/Xpipe at the same time. I found a great deal on used headers along with high flow cats & Xpipe. Take your time & plan your mods in advance. That way you will only spend the money once and not end up having to re-do them the right way the second time around. Ask me how I know that 
Melting Slicks
Joined: Jun 2001
Posts: 2,743
Likes: 3
From: Davie Florida
Originally Posted by 99 The Hard Way
I'd start with an intake first, than do the exahust. I'd wait & do headers and cats/Xpipe at the same time. I found a great deal on used headers along with high flow cats & Xpipe. Take your time & plan your mods in advance. That way you will only spend the money once and not end up having to re-do them the right way the second time around. Ask me how I know that
Keep an eye on the C5 Parts For sale Forum. You might be able to pickup headers and Hi Flow cats at a very reasonable price.
