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Old 03-31-2009, 02:43 PM   #1
iRick.
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Default Sigh. I need some help with my cat.

actually my pet is doing quite well.

But really. Here's the deal.

I have replica borla headers...a custom made high flow cat..and an espelir catback.

the **** cat snapped in two... I had it rewelded together... but its going to snap again.

I plan to get a cut out...right before the cat. So my question is..

can I get an 04/05 stock sti full exhuast? Will it match up to the headers?

Or should I just get a new regular cat, and an sti axleback?

I need it to be as quiet as possible since I have the cut out obviously...

thanks.

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Old 03-31-2009, 02:49 PM   #2
Back Road Runner
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Any exhaust shop should have no problem fabricating anything you want.
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Old 03-31-2009, 05:22 PM   #3
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yeah if you have the Borla Rep headers it is WAAAAAAYYYY cheaper than buying a pre-fabbed cat pipe with that header that you have you only need a 90 degree fitting welded to a flange bolted to the header then weld the cat in place and have that bolt which ever cat back you have on a impreza its only one pipe so it should be a simple job
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Old 03-31-2009, 06:19 PM   #4
piker28
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what makes you want that cutout? I doubt it will really help much and the amount of noise that thing will make since it always leaks a bit will be pretty damn annoying
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Old 04-01-2009, 12:49 AM   #5
iRick.
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because if I get a cut-out with a stock exhaust, I can be loud/quiet whenever I want.

the one my friend has is electric and has lasted very well.
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Old 04-01-2009, 12:50 AM   #6
iRick.
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wait. so can you guys answer my question,

will a stock 2004/2005 STI exhuast fit to my headers?
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Old 04-01-2009, 03:56 AM   #7
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Quote:
Originally Posted by jibtastic View Post
wait. so can you guys answer my question,

will a stock 2004/2005 STI exhuast fit to my headers?
no...
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Old 04-01-2009, 02:08 PM   #8
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Quote:
Originally Posted by jibtastic View Post
wait. so can u guys answer my question,

will a stock 2004/2005 STI exhuast fit to my headers?
Nah Son
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Old 04-01-2009, 08:04 PM   #9
iRick.
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I'm confused because I thought these headers are made for 2004/2005 exhausts, so why wouldn't that fit?

eh whatever. people got jokes on april fools.
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Old 04-01-2009, 08:15 PM   #10
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Is there just no movement to the pipe at all? You could always have them weld in a piece of flex pipe.
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Old 04-01-2009, 08:25 PM   #11
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an sti catback is about and in or two too short with the cat. So just get the sti pipe lengthened. You will also need the flange rotated.
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Old 04-01-2009, 08:32 PM   #12
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Quote:
Originally Posted by jibtastic View Post
I'm confused because I thought these headers are made for 2004/2005 exhausts, so why wouldn't that fit?

eh whatever. people got jokes on april fools.
The headers for the rs are the same from 98-05. Now some have retrofitted them on 06-07-08.

But in a nutshell a wrx/sti exhaust is different than a rs mainly in length but also in some sizes.

As listed above, you can just pick up a stock sti catback, and get the end modified to be a bit longer to match up. But it seems you are going to be doing all this work to your catpipe anyway you might as well just get a whole new piece and have the shop make it a few inches longer to just mate up to the sti catback and save some headaches.

and yes i still would not do this setup but whatever makes you happy
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Old 04-01-2009, 09:48 PM   #13
iRick.
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maybe some people don't realize I am talking about a stock cat that would fit an sti, and an sti exhaust.

so in essence I'd be taking everything from an STI except for the headers.

would this work?
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Old 04-01-2009, 10:52 PM   #14
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The "stock cat" as you put it is built into the downpipe of turbo models. so no
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Old 04-02-2009, 01:49 AM   #15
iRick.
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wow here I am totally forgetting about the damn downpipe.

thank you. well then let me ask this final question I promise.

Would a stock, 04/05 RS exhaust with an sti axleback work?

if not then i'll just do what I gotta do...
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Old 04-02-2009, 03:23 AM   #16
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based on where you live and what you want to do... bad idea!
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Old 04-02-2009, 03:57 AM   #17
matthewlikewhoa
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Quote:
Originally Posted by jibtastic View Post
wow here I am totally forgetting about the damn downpipe.

thank you. well then let me ask this final question I promise.

Would a stock, 04/05 RS exhaust with an sti axleback work?

if not then i'll just do what I gotta do...
are you talking about stock 04/05 header, cat, and midpipe then just a sti axleback?
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Old 04-02-2009, 12:16 PM   #18
iRick.
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i'm talking about my borla headers, with cat, midpipe, and sti axleback.

I'm starting to think I'll just get a new cat...and weld in a resonator for the exhaust I have now.

Its already pretty quiet...but not quiet enough to mix with a cut out.
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