High Flow Cats : 1992 - 1999 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 04-21-2007, 08:28 PM   #1
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Default High Flow Cats : 1992 - 1999

So I went to search for a high flow cat, and I've been seeing tons of results, any reviews on any of them? Anybody REALLY REALLY like theirs? I'm personally looking for one of my own. I'm looking for something that is 2.25" for a 94 SLE N/A, what'* a good product when it comes to great sound, and whats a good product when it comes to best performance? Anybody want to list a part number, their car, exhaust size, and short review?
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Old 04-21-2007, 08:49 PM   #2
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I bought this after I killed my oem cat. http://www.hoganperformance.com/CC1.htm I'm pretty happy with it, as for the performance part that'* hard to gauge. My exhaust note got a tad louder after I installed it.


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Old 04-21-2007, 09:29 PM   #3
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Quote:
Originally Posted by McGrath
I bought this after I killed my oem cat. http://www.hoganperformance.com/CC1.htm I'm pretty happy with it, as for the performance part that'* hard to gauge. My exhaust note got a tad louder after I installed it.


Ed
Hogan doesn't have one for the 1992-1995'*. The 1992-1995 are weld in and the best place to find one is on ebay or www.justmagnaflow.com .

Personally, for the same price you can get a 2.5" so why not get that?
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Old 04-22-2007, 12:25 AM   #4
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Quote:
Originally Posted by OLBlueEyesBonne
Hogan doesn't have one for the 1992-1995'*.
I'm aware of that the topic says 92-99, I'm just stating my experience.

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Old 04-22-2007, 01:11 AM   #5
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The topic title itself is misleading. There are 4 possibilites for catalytic converter sizes from 92-99.

Magnaflow makes the most widely-used cat. Measure your inlet and outlet, then buy one the right size WITHOUT an O2 bung from www.justmagnaflow.com
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Old 04-22-2007, 05:31 AM   #6
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Why without the O2 bung? What do you do with the sensor? And my piping is 2.25" so, I'd either have to find a donor, or get once custom made.
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Old 04-22-2007, 10:31 AM   #7
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Magnaflow has 2.25" cats, or you can sleeve down a 2.5.

No O2 bung because you don't have a second O2 behind the cat on a 94.

Like both my 93 and 95, you only have one O2 in your rear exhaust manifold.
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Old 04-22-2007, 04:40 PM   #8
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I have a MagnaFlow high flow cat like Willwren posted. Though I'm guessing mine probably has the rear bung.

My old cat was pretty clogged according the the exhaust guys and I noticed a better kick to the car when I got it back. I can't remember any change in sound.
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Old 04-23-2007, 02:29 AM   #9
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I might still have my hi-flow cat off my '95 somewhere. I was going to save for my '01, but realized it was the wrong application. If fits into the stock location. If I still have it, you can have it for dirt cheap - just let me know if you do because I would have to dig for it.
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Old 04-24-2007, 02:20 PM   #10
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Quote:
The 1992-1995 are weld in and the best place to find one is on ebay or www.justmagnaflow.com .
I was looking into a high-flow cat for my 92 N/A, and according to the FSM, it doesn't have to be welded. In fact, it tells you to use guillotine clamps...

Were you referring to the OEM cat or the replacement as 'weld in'?
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