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Old 06-25-2007, 10:05 AM   #1
jpbiker
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Join Date: May 2007
Chapter/Region: E. Canada
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2005 OutbackSport SE
Emerald green Pearl

Default Quietest High flow catback for RS ?

Allright looking for more responsive power and high flow but need to keep the sound level as low as possible. Looking for 2.25 piping and whatever tips.

Any suggestions ?

I'll have the OBX EL headers if it matters at all ...

THX
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Old 06-25-2007, 10:30 AM   #2
Siper2
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If you want 2.25" than the SPT one is out, as it's stock 1.875" but is the quietest that I know of.

The old Brullen Quiet may have been a good choice, but they're out of business. The Borla is nice, but sounds a bit like a machine gun sometimes.

I'd say possibly a Strömung, but with a long resonator in the midpipe. They'll sell them to you that way, if you pay extra for the resonator.

www.daddysscp.com
www.boxer4racing.com

Both places sell Strömung.

=S2=
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Old 06-25-2007, 12:22 PM   #3
piker28
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i dunno man with those headers, and if you kept it catless, good chance whatever you put on will be prrtty damn loud
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Old 06-25-2007, 01:50 PM   #4
AlpoRS
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get an sti take off and get it fabbed up, shouldnt be too expensive and it flows fairly well.
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Old 06-25-2007, 02:42 PM   #5
flanders
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^^^^
Least expensive route and apparently only loud when you get on it.
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Old 06-25-2007, 04:56 PM   #6
jpbiker
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Thinking of putting a cat in there too instead of the OBX resonator... is an high flow cat making a big difference in terms of flow compared to stock ? Or am I better with an STI or WRX cat ?

How much fab do you need to put an STI on ?

What's the size of the piping in stock STI catback ?

Wow, lot's of Q's

THX

Last edited by jpbiker; 06-25-2007 at 05:00 PM. Reason: complete post
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Old 06-25-2007, 10:47 PM   #7
SilverSubie2.5
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Quote:
Originally Posted by jpbiker View Post
What's the size of the piping in stock STI catback ?
It's between 2.25 and 2.5. 2 3/8 I want to say? Little bigger than you want, but I didn't notice too much difference when I put my axleback on.
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Old 06-25-2007, 11:50 PM   #8
Wiscon_Mark
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I'm having good luck with the STi catback. No big drop in torque at the low end, and I even have a 2.2L.
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Old 06-26-2007, 01:04 AM   #9
maxipad
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i as well am looking for an exhaust setup thats quiet, flows well and gets loud when i floor it. i have a short ram intake so far, and soon-to-be some borla rep's. this is for 05RS wagon.
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Old 06-26-2007, 01:26 AM   #10
BoozeRS05
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18" or bigger for a resonator, and get a good one...

http://vibrantperformance.com/catalo...0514b41961d397
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