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STS Cat Delete or Replacement?

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Old Mar 3, 2010 | 04:03 PM
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Default STS Cat Delete or Replacement?

I recently got to see some cat dust come out of tail pipe after a dyno pull. I was wondering if anyone could reccomend any replacement weld in cats that are up to the task? Also if I finish gutting the cats I heard that it can be raspy? Any one have any sound clips or personal expirence?

Thanks
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Old Mar 3, 2010 | 04:27 PM
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Running no cats or mufflers, dumped a foot off my front mount. Sounds good actually.
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Old Mar 3, 2010 | 04:43 PM
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http://www.youtube.com/watch?v=OavrySsK9zo Here is my friends car it has long tubes and an off road Y pipe. I think it sounds great!
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Old Mar 3, 2010 | 06:05 PM
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having long tubes and an OFF ROAD y pipe is DIFFERENT than having EMPTY CATS.


I've gotten rid of mine, will post up late with vid.... it for sure will be 2 weeks from now when I post a video.
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Old Mar 3, 2010 | 08:13 PM
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That car sounded good. So hollow cats have a way different noise than straight pipe?
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Old Mar 4, 2010 | 01:06 AM
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I didn't think that you were suppose to run cats with a STS system.
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Old Mar 4, 2010 | 01:44 AM
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what happens when the cat breaks apart, where do the pieces go?
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Old Mar 4, 2010 | 07:52 AM
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You can run cats. STS claims failures are very rare. I did a search and only found a hand full of posts where people were talking about it happening to them. The cat pieces hit the blades on the turbo and destroy it.
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Old Mar 4, 2010 | 09:17 PM
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I'm running a 6.0l with a front mt turbo, no cats. I constantly get compliments on the sound of the car.
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Old Mar 4, 2010 | 10:00 PM
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So straight pipe might sound better than gutted cat?
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Old Mar 4, 2010 | 11:21 PM
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Also does anyone know if the metal core cats would hold up?
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Old Mar 5, 2010 | 12:11 AM
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Originally Posted by trnsfmr99
I'm running a 6.0l with a front mt turbo, no cats. I constantly get compliments on the sound of the car.
Post up a vid!

Originally Posted by TURBO6.0L
So straight pipe might sound better than gutted cat?
IMO it would sound louder/better without a cat, plus, it would be cheaper.
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Old Mar 9, 2010 | 02:17 PM
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Well I gutted the cats this weekend and I like it. Not too much louder in the car and I have no drone. Definitely louder outside of the car. I don't really here the raspyness that people complain about. Turbo is spooling quicker and I don't really notice the exhaust smell when driving the car. I wish I would have done this sooner. Thanks for everyone's help.
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