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Go Back   IWSTI.com: Subaru WRX STI Forums > IWSTI Engine & Drivetrain > 2.5 Liter/Litre Factory Motor > GD-Exhaust


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Old 07-10-2009, 06:39 PM   #1
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Default What high flow cat? Or will I need one

I have a TurboXS cat-back waiting to be in stalled on my car and have decided to put a Titek catted DP on with it. Question is will I be able to put the TurboXS cat on w/o any fitment issues? Or somehow make the stock cat work.
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Old 07-10-2009, 07:43 PM   #2
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Default Re: What high flow cat? Or will I need one

just get a catted dp. invidia makes a good one.
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Old 07-10-2009, 11:05 PM   #3
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Default Re: What high flow cat? Or will I need one

Well i want the Titek catted DP. My question was bout the cat converter. Sorry for not puttin that earlier.
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Old 07-10-2009, 11:21 PM   #4
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Default Re: What high flow cat? Or will I need one

the titek catted downpipe already has a cat in it (hence the name...), what exactly are you asking or trying to achieve?


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Old 07-11-2009, 12:21 PM   #5
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Default Re: What high flow cat? Or will I need one

yeah i realize that, im just wondering should i get rid of the stock catalytic converter and go with test pipe or what? or will the catted DP just hook up to the cat-back?
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Old 07-11-2009, 12:22 PM   #6
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Default Re: What high flow cat? Or will I need one

Depends on the DP you want. A Cobb DP will mate right up to the stock catback. Im not sure of any others that is a direct fit to the stock catback.
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Old 07-11-2009, 12:29 PM   #7
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Default Re: What high flow cat? Or will I need one

the titek catted downpipe will replace the stock downpipe, and replace both OEM cats with one cat that comes with your downpipe.

just look at the picture of an aftermarket downpipe, it should answer all your questions.


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Old 07-11-2009, 12:30 PM   #8
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Default Re: What high flow cat? Or will I need one

ok, makes sense. First time changin exhaust so i wanna make sure i get everything right w/o any issues. Im puttin a turboxs cat back on so need to find a good DP to mate up with it
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Old 07-11-2009, 12:30 PM   #9
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Default Re: What high flow cat? Or will I need one

Thanks for info guys
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Old 07-11-2009, 12:31 PM   #10
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Default Re: What high flow cat? Or will I need one

a "test pipe" would be for two-piece downpipes. they give you the possibility to run with or without a cat, by swapping the second part of the downpipe.

if you're getting a titek, it's a one piece pipe.


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