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Old 02-20-2001, 05:33 PM   #1
Skylab
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Cool Quiet Exhaust

We all want more power. I will be looking for more power with less noise. What is a good muffler/exhaust system (cat-back) that is the most quiet of what is available?

Skylab
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Old 02-20-2001, 06:31 PM   #2
North Ursalia
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<FONT face="Comic Sans MS">STi stainless catback is a great option. Available from Mike Shields at http://www.spdusa.com among other places.

Brian
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Old 02-20-2001, 07:30 PM   #3
imprezive
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I have an exhaust comparison at my site.
some of the links may be down but you can follow the dead link and fill in the possible typos to get it working. www.geocities.com/subarusurfer/
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Old 02-20-2001, 08:26 PM   #4
Faraz
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the letters: STi
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Old 02-20-2001, 08:49 PM   #5
BRP1
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any other suggestions?
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Old 02-20-2001, 09:50 PM   #6
P.K. Motorsports
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There are no other suggestions because any straight-through muffler is going to be loud, and we don't have much, if any, experience with anything but straight-throughs... except the STi. There are different kinds of loud, but all "turbo" (e.g. straight-through) style mufflers are loud in one way or another. This classification includes just about all of the mufflers you see for sale in aftermarket Impreza exhausts. You can quiet one down with a big resonator, but it never gets to "quiet", only "not-as-loud-as-before".

Any "chambered" muffler (i.e. not a straight-through) will be relatively quiet. The STi is of this type, as is the Brospeed performance muffler offered as an option. There are others, but nobody has tried them, because if somebody is going to the trouble to weld on a new muffler they almost always choose a straight-through. Nobody knows whether the STi will outflow the Brospeed or not (probably does), but the fact that you're posting here asking about noise would lead me to recommend that you avoid straight-throughs and get the STi, or, if you want a bolt-on, the Brospeed.
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Old 02-21-2001, 05:49 AM   #7
omahasubaru
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2.25" midpipe and STi back box.
There is no other subtle set-up out there.

Go subtle, go loud, or go home!
We don't need no stinking 1.75" stock exhaust!

Also in my opinion BroSpeed isn't worth the $$$. It only costs that much cause you're getting it from SUBARU as an option.

STi is pretty much one of the few options out there, but give it time and look around before you choose it 'cause it won't be brand new from SPD, it is a take off unit.
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Old 02-21-2001, 07:02 AM   #8
paultg
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I have a Rallispec 2.25" midpipe with an Apexi RS Muffler on it. It is the most quiet system I have heard yet mext to the Subaru stock and the performance one they offfer. Apexi does not make the muffler anymore, but you could get in touch with Rallispec about there new kits with Magnaflow mufflers. www.rallispec.com
They can add resonators to quiet things down.

Be prepared to spend some cash though. If you want the best, it will cost you.

Paul G.
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Old 02-21-2001, 07:21 AM   #9
Jon Bogert
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I noticed that Teague's still lists the Apexi RS muffler on their web site. I wonder if they have old stock...
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Old 02-21-2001, 10:19 AM   #10
paultg
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Here is an O.K. picture of the rear of my car with the exhaust:
<IMG SRC="http://24.147.94.96/nesic/members/paul/rsdrvrear2.jpg" border=0>

The availablity of the muffler is strange. I have heard the muffler was discontinued by Apex'i, but I have seen others post here asking ?'s about it saying it is available. Some say a baffle inside the muffler comes loose and rattles around, rending it non-repairable. I have had no problems with mine, and have had it since Feburary of 2000. This is the second winter it has been on the car.

I am very happy with it and the performance gain. It clears the rear diff. protector also.

Paul G.
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Old 02-21-2001, 10:22 AM   #11
Keiho
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The Apex'i RS muffler IS discontinued, however they have a new model out that is very similar to it. WR series or something like that.
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Old 02-21-2001, 10:24 AM   #12
DigDug
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Question

Am I the only one here that thinks the Stromung (dual-tip anyways) isn't that intrusive? It looks good, it sounds REALLY good, and it really isn't that loud (of course, my comparison is against the likes of the Apex N1, but... ).
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Old 02-21-2001, 10:24 AM   #13
adamsrs
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Get the remus 2.25" axle-back.
adamsrs www.unnatural.org
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Old 02-21-2001, 11:36 AM   #14
Ashmason
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I got the Brospeed after my Stromung gave me a headache.

ISR has em at a decent price.
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Old 02-21-2001, 11:48 AM   #15
Jon Bogert
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Question

Here's a good question: Mike Shields (www.spdusa.com) says that the STI muffler is identical in construction to the U.S. RS stock muffler, just with bigger internal tubing.

Isn't that also a fair description of the SPT/Brospeed muffler?

So, are they the same part, except maybe for the tip?
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Old 02-21-2001, 01:35 PM   #16
Prog
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Get the scooby sport

j/k

my friend has a stromung axle back, and its very nice... grunty on the low end, but barely intrusive on the highway...
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Old 02-21-2001, 02:11 PM   #17
Faraz
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P.K. Motorsports that's what I thought ...and the N1 is gone too ...so the only quiet one left is the STi
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Old 02-21-2001, 04:36 PM   #18
P.K. Motorsports
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I thought the N1 was a straight-through? The ScoobySport is as well, as far as I know, and thus is most likely another noisy bastard on the freeway.

Prog's comment just shows that "intrusiveness" is highly subjective. Only you know how much noise you can tolerate, but if this helps, my experience is that in general with any straight-through you are going to need to turn your radio up 1-2 settings with a resonated midpipe and 2-4 without.
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Old 02-21-2001, 05:43 PM   #19
Safir
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P.K. from what I've heard the scoobysport is HELLA loud... that's why the post suggesing it was said in a sarcastic tone
Just ask subiegal, i think she has one... loves it too from what i remember.

that'd be a good one though, "yeah, the scoobysport is hardly noticable, quietest muffler i know!" hehehe
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Old 02-21-2001, 05:46 PM   #20
Safir
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PRogSi - I like my exhaust the way I like my stereo's... sound good, perform good, but not too loud... but when I feel like it i wanna be able to set off car alarms :grin: is this how you would haracterize the stromung? does he have the whole cat-back or just the muffler? dual or single?
how is it on the highway, once every couple weeks i make a 300 mile round trip on the e-way to visit my GF, i wanna be able to stand the trip...
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Old 02-21-2001, 07:04 PM   #21
paultg
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Here is another pic, but I am not sure if it helps much more:
<IMG SRC="http://24.147.94.96/nesic/members/paul/rsdrvrear3.jpg" border=0>

PK, I was not trying to be "right". I hope you did not read my post wrong. I read yours wrong though. You are the one that is "right". Mine is not a straight through design, and I don't think the Magnaflow ones are either. I wanted a muffler that looked like it belonged on the car, and came on the car. So, I opted for the standard look with a slightly larger tip than stock.

If you want quiet, I would stay away from the straight through mufflers like PK is saying. I have heard the Stromung. It is louder than mine, but not crazy loud. I like it, but I had heard negative things about the finish going bad after one NE winter (stainless tips are coated I guess-?).

I wish mine was a bit less "flappy" at idle, and had more tone. But once you get on the throttle, people still notice when I start to move. I love downshifting too.. Quiet at cruise, the minute I do something though I hear it. Just like I wanted..

This is a good post..
Thanks Pk and everyone else. I will stop posting pics of my car now.

Paul G.
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Old 02-22-2001, 12:51 AM   #22
Faraz
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adam where can you still get the remus 2.25 from?
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Old 02-22-2001, 12:55 AM   #23
P.K. Motorsports
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Paul is correct, I had forgotten about the Apex'i RS, which is another non-straight through muffler.

The Remus has been discontinued, or so I was told. I believe they are straight-throughs though, and thus are probably not any quieter than Stromungs.

The Brospeed is not the same part as the STi.

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Old 02-22-2001, 12:57 AM   #24
Kevin Thomas
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Lightbulb

I have the Remus dual-tipped muffler and I love it. Not intrusive at highway speeds and it is 'quiet' in my book.
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