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Cat Replacement??

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Old May 8, 2007 | 08:15 PM
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Default Cat Replacement??

I just bought a highly moded '99 from a forum member. I'm getting some bad exhaust smell, and think the stock cats may be going.

Any recomendations. Vette is Dyno'd at 390 RWHP w/ the cats, so i wouldn't mind high flow cats if they are available to fit, or should I just stay with stock?

I did a search of the forum, and saw lots of posts referencing high flow cats, but no specifics.

Thanks
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Old May 9, 2007 | 07:12 AM
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St. Jude Donor '05-'06-'08-'10
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Does the car have headers? You can get a mid section pipe with hi-flow cats, ,or get cats seperately and have them welded into the existing pipe.
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Old May 9, 2007 | 10:16 AM
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Originally Posted by EdsC5
Does the car have headers? You can get a mid section pipe with hi-flow cats, ,or get cats seperately and have them welded into the existing pipe.
Yes, it has TPIS headers. Where would I get a mid section with High Flow Cats for this?
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Old May 9, 2007 | 05:01 PM
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I have a set of Randon Technology High Flow Cats that have never been run on a car with a matching X Pipe.

PM me if you're interested.
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Old May 9, 2007 | 07:35 PM
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these have 02 bungs in them and all

http://www.performance-curve.com/ind...OD&ProdID=1153
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Old May 17, 2007 | 02:58 PM
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From: Royal Oak MI
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Has anyone put high flow cats on that DIDN'T greatly increase sound level?

With headers and cat back exh, this vette is about as loud as I want it to get. Could maybe stand a little increase, but I keep hearing that many of the available cats really let the noise out.
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