Quietest High flow catback for RS ?

jpbiker · 06-25-2007, 10:05 AM

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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Siper2 · 06-25-2007, 10:30 AM

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=

piker28 · 06-25-2007, 12:22 PM

i dunno man with those headers, and if you kept it catless, good chance whatever you put on will be prrtty damn loud

AlpoRS · 06-25-2007, 01:50 PM

get an sti take off and get it fabbed up, shouldnt be too expensive and it flows fairly well.

flanders · 06-25-2007, 02:42 PM

^^^^
Least expensive route and apparently only loud when you get on it.

jpbiker · 06-25-2007, 04:56 PM

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

SilverSubie2.5 · 06-25-2007, 10:47 PM

Quote:

Originally Posted by jpbiker

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.

Wiscon_Mark · 06-25-2007, 11:50 PM

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.

maxipad · 06-26-2007, 01:04 AM

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.

BoozeRS05 · 06-26-2007, 01:26 AM

18" or bigger for a resonator, and get a good one...

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

06-25-2007, 10:05 AM	#1
jpbiker Scooby Newbie Member#: 148471 Join Date: May 2007 Chapter/Region: E. Canada Vehicle: 2005 OutbackSport SE Emerald green Pearl	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 * Registered users of the site do not see these ads.

06-25-2007, 04:56 PM	#6
jpbiker Scooby Newbie Member#: 148471 Join Date: May 2007 Chapter/Region: E. Canada Vehicle: 2005 OutbackSport SE Emerald green Pearl	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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06-25-2007, 10:30 AM	#2
Siper2 Scooby Guru Member#: 1134 Join Date: Mar 2000 Chapter/Region: MAIC Location: Dillsburg, PA Vehicle: 2007 BMW 328xi wagon Silver	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=

06-25-2007, 12:22 PM	#3
piker28 Scooby Guru Member#: 22664 Join Date: Aug 2002 Location: north nj	i dunno man with those headers, and if you kept it catless, good chance whatever you put on will be prrtty damn loud

06-25-2007, 01:50 PM	#4
AlpoRS Scooby Newbie Member#: 81338 Join Date: Feb 2005 Location: Portland, OR Vehicle: 2005 2.5 RS Wagon Crystal Gray Metallic	get an sti take off and get it fabbed up, shouldnt be too expensive and it flows fairly well.

06-25-2007, 02:42 PM	#5
flanders Scooby Specialist Member#: 76382 Join Date: Dec 2004 Chapter/Region: BAIC Location: Bay Area Vehicle: 2000 BH BP Wannabe	^^^^ Least expensive route and apparently only loud when you get on it.

06-25-2007, 11:50 PM	#8
Wiscon_Mark Scooby Guru Member#: 94945 Join Date: Aug 2005 Chapter/Region: MWSOC Location: Stevens Point, WI Vehicle: 1995 Legacy OB 5MT 2003 Forester X 5MT	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.

06-26-2007, 01:04 AM	#9
maxipad Scooby Specialist Member#: 85635 Join Date: Apr 2005 Chapter/Region: VIC Location: North Vancouver/Kamloops Vehicle: '05 2.5RS CGM	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.

06-26-2007, 01:26 AM	#10
BoozeRS05 Scooby Specialist Member#: 137797 Join Date: Jan 2007 Chapter/Region: MAIC Location: SW Pennsyltuckey Vehicle: 2005 RBP LegacyGT 5mt wagon	18" or bigger for a resonator, and get a good one... http://vibrantperformance.com/catalo...0514b41961d397