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Old 01-31-2005, 12:55 PM   #1
Bagelw
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Default Borla Hush - Wagon vs Sedan

Seems like I've seen a lot of threads where people say that the Borla Hush is louder in the wagon versus a sedan. Well, this past weekend pottymouth and I installed his Borla Hush on his sedan so I figured I'd make a thread about the noise differences between his sedan and my wagon.

My wagon and his sedan have the exact same set up. They are both 04s and are both running AP Stage 2 91 octane as our base maps and have the Helix catless downpipe with the Borla Hush cat. I'll even say that we both have 18" wheels with the same size tires and both are cheap, crappy tires. His are Hankooks, mine are Federals.

First off, a stock wagon is already a little louder than a stock sedan but it is very minimal. On the freeway there tends to be just a little more wind and road noise in the wagon that most likely comes from the roof rack and the open cargo area.

Surprise, surprise! My wagon is a little bit louder with the Borla. The Borla can definitely be heard in the sedan but it is just a little bit more muted. I personally love the sound of the Hush. It really brings out the boxer rumble yet is still fairly understated. BUT, my wagon can drone some on the freeway. It is most noticable when driving around 65mph in fifth gear and accelerating. The lower rpms create the droning noise. Once you've reach a higher speed/rpm around 75mph the droning goes away. The Borla in the sedan is still noticable and is louder than stock but there doesn't seem to be the droning noise. Let me clarify that I like quiet cars and even though the Borla drones some on the freeway in my wagon it is still completely bearable. I usually have the stereo(stock btw) turned on when I'm on the freeway and it easily covers up the droning. And really once you are up to speed the droning goes away.

So yes there is a difference in noise between the sedan and wagon but it is very minor and shouldn't sway your decision with a Borla Hush. For wagon owners, just expect a little bit of droning which you will get used too and I think most people won't even mind it. If you like your car stock quiet then the Borla Hush is not for you no matter if you are a sedan owner or wagon owner.
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Old 01-31-2005, 01:10 PM   #2
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Thanks for this. I only just started researching exhausts today and am leaning toward the hush, but I had started reading about the wagon being noisy. But from this it doesnt sound like its too bad. I wonder what it would sound like with a piece of sound deadening (sp?) that is normally used for speakers. I put some over my exhaust area in the trunk of my old car and it was noticeably quieter.

-Rob
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Old 01-31-2005, 01:36 PM   #3
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Quote:
Originally Posted by Soon2bSubbieowner
Thanks for this. I only just started researching exhausts today and am leaning toward the hush, but I had started reading about the wagon being noisy. But from this it doesnt sound like its too bad. I wonder what it would sound like with a piece of sound deadening (sp?) that is normally used for speakers. .....
It's widely accepted that wagons are louder than sedans. It's obvious why - the cargo area of the wagon is open to the passenger area. This is not just a Borla Hush phenomena, but with all exhausts - the wagon will always sound louder.

And no, insulation doesn't help much. I just went through this excercise on my wagon with a Prodrive muffler, acknowledged to be one of the quietest mufflers. It was getting too loud on 8-hour road trips for passengers in the back seat. Per recommendations from those in the Audio forums, I put down Brown Bread and closed-cell neoprene foam almost everywhere in the trunk area, tripled up in some areas. It made a difference, but not noticeable to anyone else besides me. Note, though, that the complaints come from rear-seat passengers, not front-seat passengers.

I'll be trying to install another resonator and see if that helps.
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Old 02-16-2005, 01:32 AM   #4
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Quote:
Originally Posted by Orson
I'll be trying to install another resonator and see if that helps.
Are you only running the axelback Prodrive? Or do you have other mods to your exhaust?
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Old 01-31-2005, 05:20 PM   #5
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Quote:
Originally Posted by Soon2bSubbieowner
Thanks for this. I only just started researching exhausts today and am leaning toward the hush, but I had started reading about the wagon being noisy. But from this it doesnt sound like its too bad. I wonder what it would sound like with a piece of sound deadening (sp?) that is normally used for speakers. I put some over my exhaust area in the trunk of my old car and it was noticeably quieter.

-Rob
There are lots of Wagons in the area w/ a very wide mix of exhausts. You should definitely try to grab a ride/listen the next meet you come to. I know James (Jalow72) has the hush, Jared (Jard) has the SPT catback, Cobb downpipe, & Borla headers, Ed (Saint Foo) has headers, godspeed downpipe, & SPT catback, & I have the Daddy's MadDad shorty downpipe & a Prodrive. Those are just the people I can think of off the top of my head, but I know there are others.
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Old 01-31-2005, 01:21 PM   #6
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I have the Hush on my wagon with a TXS down/mid pipe. I don't like loud exhausts either but the drone at highway speeds with the Hush doesn't bother me at all.
I believe it's a good compromise between sound and performance if you keep it 3" all the way back.
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Old 01-31-2005, 01:24 PM   #7
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I have the hush on my wagon with a Stromung DP and I can't tell you how many compliments I have gotten for it.

I highly recommend the Hush!
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Old 01-31-2005, 02:43 PM   #8
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this should help w/some of the droning.

http://forums.nasioc.com/forums/showthread.php?t=676309


i'm runnin cobb stg 1 w/a borla "hush" in my wagon. so far, i haven't noticed any dronin. i'd say 85% of my driving is on the highway. i'll be installin a dp soon. if i get some dronin that's the stuff i'm gonna use to quiet things down some.
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Old 01-31-2005, 03:34 PM   #9
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Old 01-31-2005, 04:35 PM   #10
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Quote:
Originally Posted by J*Bishop
this should help w/some of the droning.

http://forums.nasioc.com/forums/showthread.php?t=676309
...
That's precisely what I was using. I started with Brown Bread, and when that wasn't enough, I overlayed Raamat on top and then put closed-cell neoprene foam on top. Believe me - it helps a lot less with low frequency stuff than you think.

Remember that a reduction in sound power by 50% yields a paltry 3dB reduction in perceived volume - just barely audible.
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Old 01-31-2005, 05:07 PM   #11
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Quick question--so you're running a catted DP and the hi-flow cat borla hush. Since you removed no cats did you throw a CEL after the install?
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Old 01-31-2005, 05:28 PM   #12
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Quote:
Originally Posted by klie5111
Quick question--so you're running a catted DP and the hi-flow cat borla hush. Since you removed no cats did you throw a CEL after the install?
Who are you asking? My car and pottymouth's car are both catless DPs.
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Old 01-31-2005, 06:15 PM   #13
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Sorry, though it said catted dp. i'll learn to read before trying to post again.
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Old 01-31-2005, 06:34 PM   #14
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Quote:
Originally Posted by klie5111
Sorry, though it said catted dp. i'll learn to read before trying to post again.
No problem. I just wasn't sure who you were asking.

Quote:
Originally Posted by slvwagon
I also have a wagon with the borla hush and b&b downpipe, does anybody else's borla hang too far to the drivers side of their exhaust cutout in the bumper?
Get Kartboy exhaust hangers. For some reason the Borla fit better on the sedan vs my wagon. I had to get the extended kartboy hangers to keep the axel back pipe section from rubbing the rear differential. Also the kartboy hangers are much stiffer so once you line the exhaust up it's not going to go anywhere.
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Old 01-31-2005, 06:16 PM   #15
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I also have a wagon with the borla hush and b&b downpipe, does anybody else's borla hang too far to the drivers side of their exhaust cutout in the bumper?
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Old 02-15-2005, 01:55 AM   #16
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I've got the Helix DP w/cat, and a Stromung dual-tip cat back - the noise after I put the DP in is BAD!!... I'm going to try to add an in-line muffler...
https://www.justmagnaflow.com/Univer...dStainless.htm
we'll see how that helps! BTW I have a Wagon...

Last edited by RogersWRX; 02-15-2005 at 10:56 AM.
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Old 02-15-2005, 02:02 AM   #17
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I want a quiet system. I plan on using a Catted Helix downpipe and mate it up to the stock catback. If Mad Dad's "Whisper" catback turns out well, I might upgrade to that.
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Old 02-15-2005, 01:17 PM   #18
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thanks for the post bagelw. it's nice to see an "apples to apples" comparison (e.g. same exact engine mods) between a wagon and sedan.....
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Old 02-15-2005, 11:30 PM   #19
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Hey bagelw i have a catless pde downpipe with stock catback and i was thinking of getting a borla hush but thankfuly for ure post i prob wont

Which saves me money, but also because im afraid of droning. Can you send me a sound clip of what it sounds like in your car? Please?

Thanks,
Rich
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Old 02-15-2005, 11:41 PM   #20
Bagelw
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Quote:
Originally Posted by rich22
Hey bagelw i have a catless pde downpipe with stock catback and i was thinking of getting a borla hush but thankfuly for ure post i prob wont

Which saves me money, but also because im afraid of droning. Can you send me a sound clip of what it sounds like in your car? Please?

Thanks,
Rich
I'll see about getting it recorded. I just need to find someone with a recorder.
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Old 02-15-2005, 11:47 PM   #21
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bagelw...im from fayetteville...had a black wrx...then silver sti. so you know zach?
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Old 02-15-2005, 11:58 PM   #22
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Quote:
Originally Posted by ashumo
bagelw...im from fayetteville...had a black wrx...then silver sti. so you know zach?
What does Zach drive? I've actually met several Suby owners here but I have trouble remember who drives what. There are even 3 other WRX owners at my work. Did you have Minnesota plates on your black WRX?
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Old 02-16-2005, 12:04 AM   #23
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no...i had a carbon hood, rotas, and blitz..then i got the STi...but i left cause im in the coast guard. where do you work? zach has an STi.
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Old 02-16-2005, 12:16 AM   #24
Bagelw
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Quote:
Originally Posted by ashumo
no...i had a carbon hood, rotas, and blitz..then i got the STi...but i left cause im in the coast guard. where do you work? zach has an STi.
Pmed you
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