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Old 05-22-2004, 11:54 AM   #1
blackie
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blizzzack stage IV

Default whats the quitest muffler for wrx?

i currently have a vibrant 3 inch catless loud ass exaust. it works fine and looks realy good but i cant stand how loud my car is. im thinking of cutting off the rear muffler(canister type) and welding on a real muffler(chambered type) in its place but dont want it to look stupid, so what should i do? i need to keep a very free flowing muffler on there at the same time though because of my mods(stage4), any ideas or suggestions?
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Old 05-22-2004, 11:55 AM   #2
blackie
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DOH! quitest is supposed to be quietest.
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Old 05-22-2004, 12:26 PM   #3
MemphisWRX
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My 5zigen is pretty darn quiet. I love it. I hate loud cars.
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Old 05-22-2004, 12:26 PM   #4
heffergm
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Prodrive
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Old 05-22-2004, 12:28 PM   #5
Sackajaweeba
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stock
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Old 05-22-2004, 12:58 PM   #6
dorifto88
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Quote:
Originally posted by Sackajaweeba
stock
or perhapse
greddy evo
or
stock sti catback
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Old 05-22-2004, 01:28 PM   #7
badkid
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Stock is right. I wish Prodrive came out with a dual-tip version of their muffler. I need a quiet muffler that bolts on to a 2.5 inch pipe at the axle back which looks stealthy stock.
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Old 05-22-2004, 02:58 PM   #8
Rich10
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Obviously, stock is quietest. The SPT STi is pretty quiet for a free flowing muffler.
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Old 05-22-2004, 03:22 PM   #9
riverarob
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I've heard the Vibrant and it's deafening. Perhaps you can sell the Vibrant and buy the Borla Hush or find someone willing to trade. Both are 3"
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Old 05-22-2004, 03:31 PM   #10
Uncle Scotty
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I don't know why some of these pipes are called 'mufflers' because they are clearly amplifiers.....
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Old 05-22-2004, 08:29 PM   #11
larryg
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Quote:
Originally posted by Uncle Scotty
I don't know why some of these pipes are called 'mufflers' because they are clearly amplifiers.....


FWIW, I just put an STi axle-back (not SPT) on my TXS Stealthback and it is nice and quite with a bit of a growl. I'm even thinking of going catless.

Larry
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Old 05-22-2004, 10:23 PM   #12
Unabomber
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a. M2 Performance 94db @ idle, 94 @ 3000 RPM
b. GReddy Evolution 94db @ idle, 92 @ 3000 RPM
c. MRT Twin Tip: No data, but commonly known as quiet.
d. Prodrive: 94dB @ idle
e. STi Muffler: No data, but commonly known as quiet.
f. Borla Hush: New exhaust with few reviews, but all of them seem to point to quiet.
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Old 05-22-2004, 10:37 PM   #13
blackie
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well thats all very good info, but what im trying to do is keep all the Vibrant exaust on and just hack off the canister, and weld a single muffler in its location, im not trying to purchase a whole new exaust system. all these nice brands you speak of dont just sell the muffler do they? if they do which one looks most stock and still flows good? also do any of you know about Magna flow mufflers or Dyna max, do they make anything that might work for me? do you think just adding a big quiet muffler at the end of the vibrant exaust will make the car quiet, or will i need a resonator too?
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Old 05-22-2004, 10:37 PM   #14
Rally Punx
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The APS is not loud at idle. WOT is a whole different story
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Old 05-22-2004, 10:41 PM   #15
Gizmoii
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Default Borla Hush is the way to go

The charts state the borla hush is quieter then stock and still out performs
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Old 05-22-2004, 10:58 PM   #16
blackie
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does borla just sell the muffler off the hush system?
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Old 05-22-2004, 11:27 PM   #17
gjhsu
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my Cobb catback is relatively quiet.
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Old 05-22-2004, 11:30 PM   #18
sandjstickney
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Prodrive=Perfect!
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Old 05-23-2004, 12:09 AM   #19
subaru mike
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What if you keep that exhaust and install some sound proofing? It would still be loud but the car would have less noise inside. Otherwise try STI exhaust.
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Old 05-23-2004, 12:29 AM   #20
BrianH
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borla hush
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Old 05-23-2004, 12:33 AM   #21
MustGoFast
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stock
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Old 05-23-2004, 12:49 AM   #22
drwrx
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Here is your problem. The Borla Hush, Greddy Evo, and many other of the "quiet" systems get that way because of one and sometimes two resonators in the mid-pipe section. If you just weld on another muffler (a Borla, Magnaflow, or DynoMax) you will not drop your Db levels significantly. Most will sit in the 82-84 db range at idle, 90-96 dbs @ 2,000-3,000 RPMs and over 110 dbs at WOT. I'm betting that is pretty close to what your Vibrant is giving you now. If you have a 3" system your choices are also a bit limiting. But if you do decide to weld on a new muffler, the Borla Pro XL is the quietest of the bunch (though it's not a quiet system by any means) and it also has very high flow #s. You may also want to consider either welding in a resonator or buying an auger style muffler insert from www.speedwaymotors.com. They are cheap ($15) and they really work, I'm using one with my custom built 3" exhaust with a borla Pro XS muffler.
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Old 05-23-2004, 01:00 AM   #23
Boostilated
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i have the spt and its really quiet
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Old 05-23-2004, 01:43 AM   #24
henzly23
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Quote:
Originally posted by Unabomber
a. M2 Performance 94db @ idle, 94 @ 3000 RPM
b. GReddy Evolution 94db @ idle, 92 @ 3000 RPM
c. MRT Twin Tip: No data, but commonly known as quiet.
d. Prodrive: 94dB @ idle
e. STi Muffler: No data, but commonly known as quiet.
f. Borla Hush: New exhaust with few reviews, but all of them seem to point to quiet.
Anyone know where the TurboXS (Magnaflow) muffler falls as far as sound level goes?
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Old 05-23-2004, 09:08 AM   #25
PeteDucati
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Borla Hush. I went from uber loud exhaust to even louder (single champer Flowmaster is freaking loud like a straight pipe!) to the 3" Bolra Hush system. The pipes are three inches and the midpipe does have a huge resonator in it. At idle the car is an ars hair louder than stock.. only noticable to the trained ear! The volume on my radio knob is half what it used to be and there's no more droaning on the highway.. AT ALL! During high RPM WOT the car doesn't have that rice buzz what so ever - it's a much softer exhaust note, quiet enough that you'll never worry about a cop pulling you over for your loud exhaust.. no matter how high you're revving it. It's also nice if you're trying to build a "sleeper". Worth every damn penny. "They" also say it doesn't have any negative effects on back pressure/flow.
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