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Cats or no Cats

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Old 03-03-2006, 02:51 PM
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Default Cats or no Cats

Should I run my STS kit without the cats? What kind of diffrence does it make and is it necessary to run 02 Sims.
Old 03-03-2006, 04:20 PM
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w/o, dont want them coming apart.
Old 03-03-2006, 06:42 PM
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yeah... if your cats go out, then so does your turbo.
Old 03-04-2006, 05:55 AM
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The turbo will also spool faster without the cats, as any restriction in the exhaust affects flow. Bob
Old 03-04-2006, 07:50 PM
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i thought about running no cats on my sts. but i paid a good bit of money for them, so if i ever want to go with a 2 step then i will remove them. plus it would be louder
Old 03-04-2006, 09:10 PM
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The car is definitely louder w/o the cats. But, as said above, if you're gonna use a 2 step, you gotta pull them anyway.



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