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Old 09-20-2006, 10:21 PM   #1
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Cats

Will a 99 v6 run properly without cats ?
a guy that used to do exhaust systems told me that they wouldn't run right if you took the cats out , it wouldn't be enough back pressure, the sensors wouldn't function properly and, it would run way rich.
Doesn't sound quite right to me.
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Old 09-20-2006, 10:25 PM   #2
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Re: Cats

Yes you can run no cats... youll need MIL eliminators though.

Also, welcome to the site :wave2:
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Old 09-21-2006, 08:23 AM   #3
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Re: Cats

you can make them run fine with no cats but it will sound like crap and move the power band up in the RPMS probably making it feel slower.
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Old 09-21-2006, 08:24 AM   #4
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Re: Cats

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Originally Posted by SpectorV View Post
you can make them run fine with no cats but it will sound like crap and move the power band up in the RPMS probably making it feel slower.
2:
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Old 09-21-2006, 12:22 PM   #5
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Re: Cats

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Originally Posted by SpectorV View Post
you can make them run fine with no cats but it will sound like crap and move the power band up in the RPMS probably making it feel slower.
What he said !! My nephew took his cats off his V6 and it sounded like crap
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Old 09-21-2006, 04:59 PM   #6
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Re: Cats

The biggest drawback is how the exhaust sound changes.
Most people do not like the change.
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Old 09-21-2006, 05:51 PM   #7
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Re: Cats

The exhaust turns very hondaish, I would not do it.
Plus you need MIL eliminators to turn off your check engine light, however the car will run properly with or without them.
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Old 09-21-2006, 08:47 PM   #8
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Re: Cats

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Originally Posted by Odie808 View Post
it wouldn't be enough back pressure
There's no such thing as "not enough back pressure".
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Old 09-21-2006, 09:08 PM   #9
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Re: Cats

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Originally Posted by SpectorV View Post
you can make them run fine with no cats but it will sound like crap and move the power band up in the RPMS probably making it feel slower.

no it doesnt............i havent noticed any difference in bottom end, and have noticed a slight pep up top.


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What he said !! My nephew took his cats off his V6 and it sounded like crap
i dont think so...........i'm satisfied with my o/r x, especially now since the newness has gone away, it has gotten a little deeper, he's probably got some glasspacks or other raspy-like mufflers on there.

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The exhaust turns very hondaish, I would not do it.
Plus you need MIL eliminators to turn off your check engine light, however the car will run properly with or without them.
no it doesnt...............hondas buzz, v6's dont.......they are FAR more higher pitch


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There's no such thing as "not enough back pressure".
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The biggest drawback is how the exhaust sound changes.
Most people do not like the change.

the only accurate things so far
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Old 09-21-2006, 11:25 PM   #10
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Re: Cats

I don't know if i'm gonna taken off or not , but I'm trying to get away from the Flowmaster nation , everybody and his cousin has them,Hell I might cut the cats out get a set of sidepipes and say to hell with it. just to be different
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Old 09-24-2006, 01:32 PM   #11
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Re: Cats

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I don't know if i'm gonna taken off or not , but I'm trying to get away from the Flowmaster nation , everybody and his cousin has them,Hell I might cut the cats out get a set of sidepipes and say to hell with it. just to be different
This makes me laugh every time I see it posted, and it just gets funnier each time it is said. Eventually, I'll probably die from it. 2:
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Old 09-24-2006, 04:39 PM   #12
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Re: Cats

Ok well I have a question about cats now. Mine sounds f'n good without the cats, the h pipe and the flowmasters.... It is a v8 so I dont know if it will sound good on a v6. Anyway, My question is... a while back I posted a thread about my car not cranking like it should sometimes, it turns over but it takes 2 to 3 times before it cranks.... I dont know maybe once a week. Anyway I have dummy sensors and I see where odie said it may run rich... is that maybe why its doing that?
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Old 09-24-2006, 05:14 PM   #13
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Re: Cats

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Originally Posted by ridenmystang View Post
Ok well I have a question about cats now. Mine sounds f'n good without the cats, the h pipe and the flowmasters.... It is a v8 so I dont know if it will sound good on a v6. Anyway, My question is... a while back I posted a thread about my car not cranking like it should sometimes, it turns over but it takes 2 to 3 times before it cranks.... I dont know maybe once a week. Anyway I have dummy sensors and I see where odie said it may run rich... is that maybe why its doing that?
Maybe..

when it does that had your car been sitting for a while? It might just be the fact that your fuel pump has to prime the car before it kicks over. :dunno:
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Old 09-24-2006, 05:38 PM   #14
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Re: Cats

No it does it anytime. I can drive it all day and it will happen.
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Old 09-24-2006, 09:54 PM   #15
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Re: Cats

Quote:
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Yes you can run no cats... youll need MIL eliminators though.
+1. Why would you want to run without cats though?
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