|
|
|
|
Thread Tools | Display Modes |
12-04-2012, 11:12 AM | #1 |
Scooby Specialist
Member#: 86788
Join Date: May 2005
Chapter/Region:
MAIC
Location: Frederick County - MD
Vehicle:04 STi PSM |
Need a Quiet Exhaust Question..lil baby dingo.
Running an 04 STi with P+L Headers, and an Invidia TBE.
Loud as hell. Expecting a kid, and the wife has pretty much laid down the law that my exhaust has to change (too loud). OK, I needed an excuse to buy more parts anyway. I've narrowed down what I believe my alternatives might be and was hoping for some input from guys with little kids on db's. What do I need to pick up that doesn't involve rolling everything (Downpipe, headers, exhaust) back to stock that is nice and quiet for a lil' baby, that is would pass a wife/mother test? Here are the options I was able to dig out of similar threads:
Also.... I HATE the way the Borla Hush looks. I have an 04 STi and twin tips just irritate the heck out of me. So the solution has to have a single tip. I'm leaning to Maddad but could be easily persuaded otherwise. Help. I have a limited time to get this taken care of.
* Registered users of the site do not see these ads.
|
12-04-2012, 11:52 AM | #2 |
Scooby Newbie
Member#: 66206
Join Date: Jul 2004
Vehicle:2005 WRX STi |
The STi axleback is the quietest. Source: I am running the STi axleback on my current green turbo setup.
People say the whisper may be quieter than the hush but both are noticeably louder than the STi axleback. |
12-04-2012, 11:57 AM | #3 |
Scooby Specialist
Member#: 255114
Join Date: Aug 2010
Chapter/Region:
Tri-State
Vehicle:2015 STi Limited CBS |
I have the 3" catless N1 Race tbe and I have the same problem. Drones like a MF'er at cruising speeds.
Look into a Cobb cbe, that's what I was planning on doing. |
12-04-2012, 12:12 PM | #4 |
Scooby Specialist
Member#: 292532
Join Date: Aug 2011
Chapter/Region:
NESIC
Location: Southwick, Ma
Vehicle:05 STI PSM |
Ever think about doing an exhaust with a cut out? Not my cup of tea, it's an option.
I had a "jna" Coughcough eBay Coughcough exhaust on my last STI, pretty quiet at cruise, nice tone, loud at WFO. I loved it. It's a Cobb replica too. |
12-04-2012, 01:06 PM | #5 |
Medium Frank
Moderator Member#: 140114
Join Date: Feb 2007
Chapter/Region:
MAIC
Location: Common Sense, VA
Vehicle:2020 Subaru Outback |
JNA is not an ebay brand. cough cough
|
12-04-2012, 01:39 PM | #6 | |
Scooby Specialist
Member#: 86788
Join Date: May 2005
Chapter/Region:
MAIC
Location: Frederick County - MD
Vehicle:04 STi PSM |
Quote:
The cutout plan is interesting --- but too much of a hassle. I don't want to constantly be looking over my shoulder dodging and afraid of inspection tickets. And since this isn't a track car I'd just rather not. |
|
12-04-2012, 02:03 PM | #7 |
Scooby Specialist
Member#: 45076
Join Date: Oct 2003
Chapter/Region:
Tri-State
Location: Rockland County, NY
Vehicle:2004 Stg 2 wagon AT 16 BRZ. Both silver |
I have the prodrive oval - love it - great sound but not too much.
|
12-06-2012, 04:53 AM | #8 |
Scooby Specialist
Member#: 171412
Join Date: Feb 2008
Chapter/Region:
SCIC
Location: SQC-NY
|
Stock. And probably stock suspension too. You might as well get another car. Diapers ain't cheap, damn diapers..
|
12-06-2012, 05:35 AM | #9 |
*** Banned ***
Member#: 16200
Join Date: Mar 2002
Vehicle:OK buy Nates beans westcoastroasting.com |
stock axle back or a prodrive would be my recomendation....or a 2.5" stromung for a bit louder over 3500 rpm
|
12-06-2012, 07:31 AM | #10 |
Scooby Specialist
Member#: 315546
Join Date: Apr 2012
Location: nova
Vehicle:03 wrx silver |
would'nt a sti axleback create a bottle neck considering he's going from3" piping to 2.5?
This depends on if you wanna keep the rumble or not, hands down I believe a SPT muffler is the quitest aftermarket one out there, and it keeps the rumble. STI muffler you won't hear the rumble unless ur standing right next to it outside. I had the same problem and just bought a SPT muffler off a 10 wrx sedan and just cut/welded to my own piping. Sounds great. |
12-06-2012, 11:29 AM | #11 | |
Scooby Newbie
Member#: 222725
Join Date: Sep 2009
Vehicle:2006 WRX CGM |
Quote:
To OP: the stock STI axleback will be the quietest and will mate up fine. IIRC, Grimmspeed has a flange to get aftermarket downpipes to mate with stock axleback easier. It'll be the cheapest and quietest solution |
|
12-06-2012, 12:00 PM | #12 | |
Scooby Newbie
Member#: 66206
Join Date: Jul 2004
Vehicle:2005 WRX STi |
Quote:
You are giving up some horsepower, but it isn't very much for the amount of sound the stock axleback is able to suppress. Obviously, if you want every last horsepower you'll want larger piping but it certainly won't be as quiet |
|
12-06-2012, 12:13 PM | #13 |
Scooby Specialist
Member#: 243992
Join Date: Apr 2010
Chapter/Region:
MWSOC
Location: Morton Grove, Illinois
Vehicle:2006 WRX TR WRB |
Any Cobb style exhaust, my gf has a 18 month old and he has no problem sleeping in thr car
Then again he also liked it when it was open dp too |
12-06-2012, 11:15 PM | #14 |
Scooby Specialist
Member#: 138569
Join Date: Jan 2007
Chapter/Region:
SCIC
Vehicle:2017 A4 Quattro |
|
12-06-2012, 11:59 PM | #15 |
Scooby Specialist
Member#: 324808
Join Date: Jul 2012
Chapter/Region:
E. Canada
Location: Toronto, canada
Vehicle:2006 IWL Stg2 OBP |
2 resonators and a cat atleast somewhere, aftermarket exhaust parts like headers dp etc to be wrapped. all those helped in my situation. it sounds subtle and smooth, not loud at all esp at idle. boxer melody when i push it a bit
but i wont disagree about stock parts. the quietest method. oh wait...what about sound deadening strategy? dynamat for instance. |
12-07-2012, 02:28 AM | #16 | ||
*** Banned ***
Member#: 16200
Join Date: Mar 2002
Vehicle:OK buy Nates beans westcoastroasting.com |
Quote:
Quote:
this whole fantasy about a 'bottleneck' in the exhaust is actually....REDUCING the diameter of the midpipe between the end of the dp and the beginning of the axleback from 3' to 2.5"(all of the tbe really all needs to be either coated or wrapped all the way back to the muffler can to work properly.....but kiddie boiz dont know anything about thermodynamics or any of all this kinna un k00 stuff cuz it aint k00) creates INCREASED flow as the exhaust gas cools and contracts and slows down in the pipe....but this only really works if you use a straight through design muffler....but decreasing the pipe size actually CAN increase flow....a LOT...if it is done right...like coated and wrapped but it aint a 3" pipe so it aint k00 and its wrong because it cant be right because math and all that junk but what do i know about anything, anyway wives tales and 'common sense' that is just faulty logic is the rule here......but actually knowing stuff aint k00 oh well....keep on keepin on......... |
||
12-07-2012, 02:30 AM | #17 |
Scooby Specialist
Member#: 194132
Join Date: Nov 2008
Location: Indiana
Vehicle:2009 WRX Sedan SSM |
^ Yo dawg koo stori brah.
|
12-07-2012, 02:41 AM | #18 |
Scooby Specialist
Member#: 271412
Join Date: Jan 2011
Chapter/Region:
Tri-State
Location: avoca pa
Vehicle:05 ej207 wrx wagon wrb |
My greddy evo 2 is great. Looks and sounds great. Still rumbly but quieter than most. 3 year old sleeps fine in the car
|
12-07-2012, 03:19 AM | #19 |
Scooby Specialist
Member#: 276425
Join Date: Mar 2011
Chapter/Region:
NWIC
Location: Seattle, WA
Vehicle:2003 BMW M3 Jet Black |
I had a Maddad Whisper before and now I have an STi catback.
The Maddad is one of the best sounding exhausts ever, and it's not loud at all. It's barely noticeable around town until you get on it. But when you get on it, it opens up and has a very, very nice tone. The STi catback is barely audible ever. You don't hear any exhaust note, just a "whomp whomp" from the boxer rumble. I would say this is too quiet. I regret getting replacing my Whisper with the STi catback. Also, the Whisper is very well-made. It could hang up in a museum. |
12-07-2012, 11:26 AM | #20 |
Scooby Newbie
Member#: 303849
Join Date: Dec 2011
Chapter/Region:
Tri-State
Location: Big City
Vehicle:2004 Forester Xt Silver stg2 |
GREDDY SP EVO its quite for my mods
|
12-07-2012, 01:50 PM | #21 | |
Scooby Newbie
Member#: 222725
Join Date: Sep 2009
Vehicle:2006 WRX CGM |
Quote:
|
|
12-07-2012, 02:42 PM | #22 |
Scooby Newbie
Member#: 318713
Join Date: May 2012
|
Running cobb TBE on my wagon. 0 drone. 1 happy three and half month daughter. But she'll sleep through anything anyways
Last edited by aepilot; 12-07-2012 at 03:28 PM. |
12-07-2012, 03:08 PM | #23 |
Scooby Guru
Member#: 170349
Join Date: Jan 2008
Chapter/Region:
SCIC
Location: Yorba linda, Ca
Vehicle:2020 997TT,fx35,sti WR Blue w/ carbon bits |
cobb, maddad, stromung, greddy evo 2, and blitz nur spec RX are probably your quietest options if you want aftermarket. I've gone through every single one on your list.
|
12-08-2012, 12:15 AM | #24 |
Scooby Specialist
Member#: 220114
Join Date: Aug 2009
Chapter/Region:
NWIC
Location: 509
Vehicle:04 STi OBP |
I have the maddad whisper, it is extremely quiet when driving normal, but still sounds nice when you get on it. I bought it when I lived in cali and wanted a stealthy exhaust to not attract attention.
Here is a vid of mine during a tuning session on the dyno. http://http://m.youtube.com/watch?feature=relmfu&v=sx3ldHNzvf4 |
12-08-2012, 12:32 AM | #25 |
Scooby Specialist
Member#: 300551
Join Date: Nov 2011
Chapter/Region:
SCIC
Location: mariposa ca.
Vehicle:2002 FOZ STI 2.34 Fullers Garage |
I Have the maddad and it is quiet with a catted down pipe. I just installed a stromung on a catted down pipe and it was quiet to. I installed a borla hush on a catless system and it wasn't as quiet. I think a catted down pipe helps.
|
Thread Tools | |
Display Modes | |
|
|