LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

gutted cat

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Old 09-10-2003, 09:16 PM
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gutted cat

I was thinking of pulling my 3" cat and putting a gutted one that i have on the car . I was told it has a new high flow cat, not sure if its true. With the gutted one will the car gain any power or sound from this.

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Old 09-10-2003, 09:18 PM
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it will be louder, raspier, less low end torque, more popping noise, and maybe slightly more HP in higher RPMs.
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Old 09-10-2003, 09:19 PM
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Nice screen-name.

You'll gain a handful of ponies from it, and you'll notice a raspier and louder exhaust note. Some think it sounds great, while others do not. A straight-pipe would be a better alternative, to minimize exhaust turbulence.
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Old 09-10-2003, 09:21 PM
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i actually lost hp thanks to my offroad pipe. When i put my motor together i had several degrees of KR then when i put a cat, back on the KR went away. It felt way stronger after that.
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Old 09-10-2003, 09:28 PM
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any one else , 2 good , 1 bad. I was ready to run out and do it then z95m6 posted.

every time i see your sceen name i think its my postbut then again yours is newer
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Old 09-10-2003, 09:30 PM
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I forgot top write that the car is stock, only mods are filter and 3" flow master exhuast. this might help
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Old 09-12-2003, 07:03 PM
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the gutted cat seems to help out on the bottom end and the top end, i have a little more pull on the top end for sure.
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Old 09-12-2003, 10:53 PM
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Gutting the cats doesn't do jack for the car's performance. I am just polluting the environment more, and after the headers, my car doesn't sound all that impressive. Don't do it, it is a waste of time. If you want to do something good, get a off-road pipe.
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Old 09-13-2003, 11:26 AM
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My cat is gutted and the whole car smells like gas at times. Especially sitting at a light, my guess is that the wind blows it into the cabin. Either that or something else is wrong with my car . I'm definatly thinking about going to an aftermarket cat.
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Old 09-13-2003, 11:37 AM
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I gained quite a few HP from my ORP, and i didnt notice any loss in the low end. And i love the sound.
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Old 09-13-2003, 12:43 PM
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It seems to help mine out. As for the gas smell i have the same thing but it was there before i changed the cat so i dont think thats it, you must have the same problem that i have .
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Old 09-13-2003, 12:52 PM
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Originally posted by ramair94ta
It seems to help mine out. As for the gas smell i have the same thing but it was there before i changed the cat so i dont think thats it, you must have the same problem that i have .
i dont notice much of a gassy smell
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Old 09-13-2003, 12:57 PM
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no , no, mazer3800 said he gets a gas smell , i had the gas smell before i did my cat so i know its not the cat. not sure what it is
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