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A.X.D.
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5,114 Posts
Discussion Starter #1 (Edited)
if you have heard 2 or more aftermarket exhausts on the STi,
post them in here. high levels of participation will yield a good
(mostly accurate) list, in order of loudness.

NOTE: the list order from top to bottom may/may not vary much
in decibels, so don't cry if the order makes one exhaust look
louder than another one when it may not be.




LOUDEST at top

Straight Pipe
RS*R
BPM Twister II
ANSA
Buddy Club Spec III
Invidia N1 Race | Blitz nur spec R | TurboXS RFL-Ti
Helix Titanium | Apex'i GT Spec
Kakimoto Gt1.0z
Perrin Catless Twip tip TBE
JIC 505S
B&B (non-catted midpipe)
BPM (non-catted) GT
APS 3.5"
HKS Carbon TI | Skunk2
Greddy Titanium
Invidia G200
HKS Hi-Power
Injen
Crawford
Megan Racing TBE
Worx Tuning
APS 3"
Cobb 3" | Stromung | Espelir
CES
Greddy EVO 2 | Greddy SP2
SPT
Prodrive
Borla XR-1
JDM/USDM STi Genome Axleback
TurboXS (Magnaflow) Axleback
Greddy EVO
Tanabe Medallion Touring
Borla Hush
Fujitsubo Power Getter
MadDad Whisper
Fujitsubo Legalis Super-R | Fujitsubo RM01A
STOCK


Thank you to hewmanbing for starting this thread originally! :tup:
 

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A.X.D.
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5,114 Posts
Discussion Starter #2 (Edited)
This post was copied from R4ND0M_AX3's original:



Engine RPM must be held steady at 75% of rated peak horsepower RPM.

Given the latter figure is 6,000 RPM for the US spec. WRX/STI, the test speed is 4,500 RPM for these vehicles.
 

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A.X.D.
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5,114 Posts
Discussion Starter #3
this thread is obviously difficult to keep accurate as is, so if you feel the need to comment on or endorse brand "X" exhaust and contribute nothing to the list or help in making the list order more representative of loudness, keep your posts out of this thread.

also, if you are a vendor and want to talk about your exhaust in here, don't. you have your vendor threads for that.
 

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A.X.D.
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5,114 Posts
Discussion Starter #5
thanks modaddict - Unabomber's spreadsheet was used in ordering this list as well, but being that most of his list belonged to tests performed on WRXs and contained FXTs in it as well, i used members opinions of exhausts they've heard as well.

unless we were to organize a huge meet where testing would be performed as per R4ND0M_AX3's post, this list will always be fluid and open to a somewhat big margin of error.
 

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A.X.D.
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5,114 Posts
Discussion Starter #6
updated list order - removed posts to keep thread easily readable.

remember, the list order is not linear in difference of "loudness" from the top to the bottom - it is variable.
 

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Hey Majin, if there are vids from guyz on here with these listed exhaust can they prove vids or feedback for those of that are STill stock and tryin to decide on an exhaust?
thanx in advance!
 

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A.X.D.
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5,114 Posts
Discussion Starter #13
Hey Majin, if there are vids from guyz on here with these listed exhaust can they prove vids or feedback for those of that are STill stock and tryin to decide on an exhaust?
thanx in advance!
in my opinion, i think the videos will not provide much use for the list order being that the sound will vary depended on too many variables (camera used, surrounding acoustics, interference noise, user's speakers, sound card/settings, etc.)

i feel that we should limit the number of variables on our list (even though personal opinions are not a good variable to stick to), just so that our list can be somewhat useful.

again, this list is far from being the "end all, be all" list of exhaust loudness, but it should give us all an idea as to what we should look for.
 

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a catback straight pipe isn't that loud? Huh? I've never heard one in person, but it was always my guess that the muffler muffled, and the cat catalyzed. This way, if you took our the muffler, it would be quite loud......
 

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if the car still has the cat's in it....I.E stock downpipe and a straightpipe from there....it won't be that loud. Cat's quiet the car down a significant amount. Especially if there is more than 1
 
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