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Old 02-27-2003, 06:45 PM   #1
Janq
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Default How might the STi muffler sound?

I'm wondering if anyone is familiar with the sound 'style' and loudness (db's) of the STi muffler?

Specifically I'm hoping for a relatively mellow and subdued but authoritative sound. Something that sounds sporty but not raspy or tinny like those annoying riced out & tuned Honda's that it seems every other high school student drives.

Hopefully one of you might point me toward a specific aftermarket muffler(s) that is tuned to provide a discreet and low growl (ala small block V8) but not increase backpressure and robbing power.

The STi will be my primary commuter vehicle (wife drives a Volvo V40 wagon that may get exchanged for a Honda Element) which means I'll be driving it to various work related functions where clients might 'hear' me coming (!).

The looks I'll get from folks over the wing and gold wheels alone will be enough. If the car sounds like a turbo powered 'Veg-a-matic' then I'll really have some explaining to do.

I can't wait to see the expressions of my neighbors and the teen tuner kids on the block when my STi arrives.

Thanks for your help!

- Janq
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Old 02-27-2003, 06:51 PM   #2
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Do you mean the dealer option STI genome muffler? or the OEM muffler on the STI your buying?

I can point you in the direction of the Prodrive WRSport muffler, not much louder at idle or cruising but an noticable growl and increased decibels at WOT etc. Not ricey at all. The STI dealer option muffler for an wrx sounds almost exactly the same IMO(I used to have one).

Any cat-back or axle back exhuast will not really give you significant gains in performance as far as decreasing the boost threshold and reducing back pressure IMO. There are still two cats one resonator ahead of it you know..

Does the STI have an precat before the turbo like the wrx? Or is it down to only two cats now?
Paul
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Old 02-27-2003, 06:57 PM   #3
Janq
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I'm thinking of the stock '04 STi muffler.

I have never purchased a performance muffler before and am not in my element on this subject.

My primary thought is toward sound of a potntial aftermarket muffler with it having ar least equal performace to the stock unit.

I would only swap the stocker out if its loud and/or ricey.

- Janq
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Old 02-27-2003, 07:04 PM   #4
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Oh ok, I very much doubt that it willbe loud or ricey at all. It definatly won't be loud, and it's almost impossible to get an wrx to sound ricey no matter what exhuast you have IMO and I'm sure the STI will be the same way.

If you've ever heard an JDM or U.k. spec STI in stock form they are not much louder than an stock wrx.. They definatly have more of an growl though.
Paul
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Old 02-27-2003, 07:15 PM   #5
Janq
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Ok...cool, that helps alot!
I can definitely live with a sound similar to the regular WRX.

Now I just have to figure out what kind of sound system to install in the car.

Stay with the lightweight theme and just place a CD 'boombox' on the passenger seat for commuter traffic drives...or keep it extreme like the rest of the car do a full XM/MP3/NAV/Alpine set-up with multiple speakers and plenty o' bass!

- Janq
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Old 02-27-2003, 08:21 PM   #6
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abcde

Last edited by seongjdsn; 02-02-2007 at 02:53 PM.
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Old 02-27-2003, 10:31 PM   #7
Janq
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That's what I'm talkin' about.

The engine doesn't sound like the stock WRX...it's much better.
Like a cross between a big bore motorcycle and an M3.

Nice...

Thanks!

- Janq
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Old 02-28-2003, 12:10 AM   #8
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THATS SO SWEET!

nice find, thanks alot man.

so that sound is definately from the sti?
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Old 02-28-2003, 04:01 AM   #9
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Im betting the STI will sound like the dealer-sold STI muffler for the WRX. Kinda like how it sounds in the commercial...
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Old 02-28-2003, 08:04 AM   #10
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IDK, I've heard wrx's with full OEM STI turboback exhuast and it sounded as quiet as USDM turboback exhuast but just with more of an growl to it.

The STI genome muffler that SOA sells is an straight through design(albiet with an small inner diameter), but in any case the OEM STI mufflers have baffles and all that good stuff so the sound has to be quieter. Unless it has one of those flaps liek the EVO muffler, where it's very quiet until WOT but I havn't heard of anything like that for the STI.
Paul
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Old 03-01-2003, 01:08 AM   #11
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from outside the car the muffler sounds nice, didnt have the hollow sound very throaty.
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Old 03-02-2003, 12:20 AM   #12
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2.5 over the 2.0 will help in the sound department too. I preferred the sound of my RS over my WRX; bigger pistons = nice sound....

MaxGrip
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Old 03-02-2003, 12:56 AM   #13
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That Australian clip was simply amazing..... I mean..... oh, man, that was awesome.
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Old 03-02-2003, 02:11 AM   #14
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Quote:
Originally posted by spburns74
2.5 over the 2.0 will help in the sound department too. I preferred the sound of my RS over my WRX; bigger pistons = nice sound....

MaxGrip
That is mostly an N/A vs. Turbo thing. My 1.8 sounds just as mean as an RS
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Old 03-04-2003, 03:25 AM   #15
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Quote:
Originally posted by PaulRex
Do you mean the dealer option STI genome muffler? or the OEM muffler on the STI your buying?

I can point you in the direction of the Prodrive WRSport muffler, not much louder at idle or cruising but an noticable growl and increased decibels at WOT etc. Not ricey at all. The STI dealer option muffler for an wrx sounds almost exactly the same IMO(I used to have one).

Any cat-back or axle back exhuast will not really give you significant gains in performance as far as decreasing the boost threshold and reducing back pressure IMO. There are still two cats one resonator ahead of it you know..

Does the STI have an precat before the turbo like the wrx? Or is it down to only two cats now?
Paul
Nope, the reason why there is a pre-turbo cat is to pass emissions. (The cat right near the engine neads the heat to light up quickly so it can function correctly) With the introduction of AVCS this problem doesn't exist, so you'll notice that no AVCS equiped subarus have pre-turbo cats.

Gerrod
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Old 03-04-2003, 08:09 AM   #16
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Oh ok, does it have TGVs like the wrx too? Or did they get rid of those as well?
Paul
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Old 03-04-2003, 06:53 PM   #17
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Quote:
Originally posted by seongjdsn
here's the australian sti website where you can hear the sti. hope that helps . . .

http://subaru.com.au/explore/impreza...asp?item=11587
That may not be accurate as the Austrailian version still has the 2.0...

Not the 2.5 like we do. I'd expect the 2.5 to be louder and deeper sounding.
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