Welcome to the North American Subaru Impreza Owners Club Thursday August 28, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Factory 2.5L Turbo Powertrain

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 05-30-2007, 03:37 PM   #1
keaniegenie
Scooby Specialist
 
Member#: 94494
Join Date: Aug 2005
Chapter/Region: NWIC
Location: Seattle
Vehicle:
2005 Element 92x
Black

Default MadDad Whisper exhausts...what's your experience? TUNERS WANTED!!!

I absolutely hate buying "replacement" parts, but once in a while you look for something better than the upgrade you got.

I'm at that point with my catback. I currently am running an Invidia 3" catless downpipe to a Greddy Evo2.

I bought the Evo2 due to it's low volume and high flow capabilities.

That being said, it doesn't really fit the look of my car (Saab 92x).

The only exhaust that has intrigued me is the MadDad Whisper dual-tip catback. I love how it's a true 3" with no tapers. My only concern is whether the muffler is restrictive.

What experiences do you guys have on this catback? I would LOVE some input from tuners.

It is important that I have a high-flowing exhaust since I have a decently high-powered setup. Here is my list of power mods relative to this exhaust.

swapped USDM STI 2.5l longblock
Turbo XS TMIC
3" catless Invidia downpipe
Turbo XS short ram intake
Element GT52 turbo +injectors & pump
Element Hydra + Hydramist water injection
APS header
Turbosmart EWG plumbed to downpipe
Perrin inlet pipe

I expect this setup to be running low to mid 400whp on pump + water injection. I want a catback that will support upwards of 500whp in case I want to do a c16 tune or get cams+ pistons or both.

I really don't need much info on how this exhaust does on a stock setup since I'm far from stock.

Thanks for the input!

BTW, here's a pic of my exhaust on my car



Here's the one I'm thinking about...




Remember, the goal is to remain quiet, stay high-flowing, and improve looks.

Thanks for the input in advance!
* Registered users of the site do not see these ads.
keaniegenie is offline   Reply With Quote
Old 05-30-2007, 03:52 PM   #2
keaniegenie
Scooby Specialist
 
Member#: 94494
Join Date: Aug 2005
Chapter/Region: NWIC
Location: Seattle
Vehicle:
2005 Element 92x
Black

Default

BTW,

I wanted to thank Unabomber for his research here...

http://forums.nasioc.com/forums/showthread.php?t=677926

Comparing the WRX with the evo2 catback and stock down/midpipe vs. the maddad with the upgraded downpipe let's me know the maddad is similar in volume or less!

Now, I need some info the how restrictive it is.

The two cars I'm referring to on Unabomber's excel


Year/Make/Model Silencer Axle back Cat back Mid Pipe Cat? Downpipe Cat? Turbo Uppipe Exhaust Manifold dB @ idle dB @ 3000RPM


2005 Subaru WRX No Greddy Evolution Stock Yes Stock Yes Stock Stock Stock 93 102

2003 Subaru WRX No Mad Dad Whisper Helix No Helix Hi Flow Stock Rand. Tech. Borla 95 101

Last edited by keaniegenie; 05-30-2007 at 04:01 PM.
keaniegenie is offline   Reply With Quote
Old 05-30-2007, 04:39 PM   #3
WRX4ME LE 482
Scooby Newbie
 
Member#: 146086
Join Date: Apr 2007
Location: Hattiesburg, MS
Vehicle:
2007 STi Limited 482
UGM

Default

That exhaust looks tight. Any exhaust I get will have the rolled tip. I cant stand the way the ordinary tips look.

oh yea, bump
WRX4ME LE 482 is offline   Reply With Quote
Old 05-30-2007, 06:15 PM   #4
timeless
Scooby Specialist
 
Member#: 46316
Join Date: Oct 2003
Chapter/Region: SCIC
Location: Taco trucks, L.A.
Vehicle:
30R STI 440 whp/wtq
Prodrive gc010e 18x9.5+25

Default

I'm not a tuner but my experience with this exhaust is found in the following thread...

http://forums.nasioc.com/forums/show....php?t=1191620

I've ran a number of exhausts on my STI and my opinion with the Whisper is still unchanged. I don't think I'll be changing this one out for a while. Currently the car is running a GT30R with equal length headers and sounds much quieter than the Borla Hush I once had. The design and finish is much better built than the Borla as well. If you don't mind losing the boxer rumble pair this exhaust up with an equal length and I can assure you will love it.

timeless is offline   Reply With Quote
Old 05-30-2007, 06:55 PM   #5
keaniegenie
Scooby Specialist
 
Member#: 94494
Join Date: Aug 2005
Chapter/Region: NWIC
Location: Seattle
Vehicle:
2005 Element 92x
Black

Default

Thanks for chiming in.

I read the whole review. Very nice!

I noticed that Jorge tuned a setup with this exhaust that was mentioned in your thread. I PM'd him to chime in on his thoughts.

Also asked David Buschur to chime in from a previous tuning session.

Last edited by keaniegenie; 05-30-2007 at 07:01 PM.
keaniegenie is offline   Reply With Quote
Old 05-30-2007, 09:59 PM   #6
Uncle Scotty
Scooby Guru
 
Member#: 16200
Join Date: Mar 2002
Vehicle:
OK Houston
we have an Uncle

Default

Lots of people like the Stromung....and they have a twin tip
Uncle Scotty is offline   Reply With Quote
Old 05-31-2007, 02:54 AM   #7
keaniegenie
Scooby Specialist
 
Member#: 94494
Join Date: Aug 2005
Chapter/Region: NWIC
Location: Seattle
Vehicle:
2005 Element 92x
Black

Default

Quote:
Originally Posted by Uncle Scotty View Post
Lots of people like the Stromung....and they have a twin tip
I don't know much about that exhaust either.

I want a more OEM looking exhaust, even if it's louder than my evo2 as long as it can handle similar power levels.

The highest hp cars I've found so far are high 300's and low 400's.
keaniegenie is offline   Reply With Quote
Old 05-31-2007, 11:28 AM   #8
mapleleaf
Scooby Specialist
 
Member#: 103399
Join Date: Dec 2005
Chapter/Region: E. Canada
Location: Halifax, Nova Scotia
Vehicle:
2009 Stripped STI
Dirty White

Default

Quote:
Originally Posted by keaniegenie View Post
I don't know much about that exhaust either.

I want a more OEM looking exhaust, even if it's louder than my evo2 as long as it can handle similar power levels.

The highest hp cars I've found so far are high 300's and low 400's.
Stromung will sound like a Cobb catback, because Stromung makes Cobb's mufflers..
I have a Bosal/SPT 3 inch midpipe to a very stock looking SPT 2.5 inch axleback and it is about the same loudness as my friends Evo2.
Not really restrictive, but also not a straight through design.
I don't know how much loss would be on the table at over 400whp as I only make 320 and am running catless.

BTW I think the Evo looks great on your car the way it is.
mapleleaf is offline   Reply With Quote
Old 05-31-2007, 03:47 PM   #9
Robertob
Scooby Newbie
 
Member#: 147254
Join Date: Apr 2007
Chapter/Region: SCIC
Location: Los Angeles - Atwater Village
Vehicle:
2005 9-2x
Silver

Default

Stromung makes the maddad too.
Robertob is offline   Reply With Quote
Old 05-31-2007, 06:19 PM   #10
sperry7
Scooby Specialist
 
Member#: 110079
Join Date: Mar 2006
Chapter/Region: SWIC
Location: Vegas
Vehicle:
06 WRX
Black on Black

Default

From listening to both running side by side the Stromung is louder than the Cobb. I have a twin tip Stromung full 3". The sound I don't think you can beat. It is very quiet though. All the "quiet" mufflers are pretty close. Hush, Whisper, Stromung, Cobb, Prodrive, EVO2.

Flow is very subjective it's going to be hard to say which one flows better. Could be the downpipe design restricing things etc. etc. but you know that.
sperry7 is offline   Reply With Quote
Old 05-31-2007, 06:41 PM   #11
wacerx
Scooby Specialist
 
Member#: 96075
Join Date: Sep 2005
Chapter/Region: SCIC
Location: White Lotus OG
Vehicle:
07 OBP STi
who wants to buy?

Default

in order to lower the volume you must give up some flow. there is no way around that. however the amount of power lost at low power levels like ours, meaning sub 400whp, will be minimal and not noticed. i think the maddad exhaust is a very nice piece so i say go for it and dont worry about it not being a complete no res, no muffler straight through design.
wacerx is offline   Reply With Quote
Old 05-31-2007, 09:26 PM   #12
Unabomber
Big Ron
Moderator
 
Member#: 18062
Join Date: Apr 2002
Chapter/Region: MAIC
Location: I can save you a ton of cash
Vehicle:
on car parts so PM
me b4 j00 buy

Default

http://forums.nasioc.com/forums/priv...o=newpm&u=6598

PM dbrier as he has this exhaust and will tell all!
Unabomber is offline   Reply With Quote
Old 06-01-2007, 12:47 AM   #13
keaniegenie
Scooby Specialist
 
Member#: 94494
Join Date: Aug 2005
Chapter/Region: NWIC
Location: Seattle
Vehicle:
2005 Element 92x
Black

Default

Quote:
Originally Posted by Unabomber View Post
http://forums.nasioc.com/forums/priv...o=newpm&u=6598

PM dbrier as he has this exhaust and will tell all!
Done!

What I'll probably do is once my car is 100% tuned, I'll give this exhaust a try. My Hydra will tell me very quickly if this thing is choking up my system. With the MadDad 2 week guarantee, I can always take it off and ship it back if it doesn't suit my setup.
keaniegenie is offline   Reply With Quote
Old 06-01-2007, 05:25 AM   #14
Unabomber
Big Ron
Moderator
 
Member#: 18062
Join Date: Apr 2002
Chapter/Region: MAIC
Location: I can save you a ton of cash
Vehicle:
on car parts so PM
me b4 j00 buy

Default

If you do go for it, PM Rich at Mad Daddy and ask for the Unabomber discount.
Unabomber is offline   Reply With Quote
Old 06-01-2007, 07:19 AM   #15
keaniegenie
Scooby Specialist
 
Member#: 94494
Join Date: Aug 2005
Chapter/Region: NWIC
Location: Seattle
Vehicle:
2005 Element 92x
Black

Default

Quote:
Originally Posted by Unabomber View Post
If you do go for it, PM Rich at Mad Daddy and ask for the Unabomber discount.
I will do that!!!

I'm almost positive I'm going to give it a try. I think it will look perfect on my car.
keaniegenie is offline   Reply With Quote
Old 06-06-2007, 08:39 PM   #16
ringe
Scooby Specialist
 
Member#: 49998
Join Date: Dec 2003
Chapter/Region: RMIC
Vehicle:
2007 WRX CT Stg 2
WRB

Default

Quote:
Originally Posted by Robertob View Post
Stromung makes the maddad too.
Bump to clarify this.
ringe is offline   Reply With Quote
Old 06-06-2007, 10:22 PM   #17
RemlapaN
Scooby Newbie
 
Member#: 58251
Join Date: Mar 2004
Chapter/Region: Tri-State
Location: Northeast PA
Vehicle:
2004 Sti
GT35R 530whp @ 27psi

Default

What about the APS 3" dual-tip?

I guess the largest downside there is you might need to purchase it as a whole turbo-back kit. I have the dual-tip on my car, and it looks great + sounds great. Fitment was amazing as well

http://www.airpowersystems.com.au/us...wrx-hoe-r8.htm
RemlapaN is offline   Reply With Quote
Old 06-06-2007, 10:45 PM   #18
Blown95ImpalaSS
Scooby Specialist
 
Member#: 87629
Join Date: May 2005
Chapter/Region: SCIC
Location: Ktown
Vehicle:
2013 Focus ST

Default

doood, the whisper is my favorite part of my car. it also helped me trap at 106 with the usual vf39/topmount/pinks/ecutek setup. absolutely no drone in the wagon either...i say do it.
Blown95ImpalaSS is offline   Reply With Quote
Old 06-07-2007, 08:48 PM   #19
jflexe99
Scooby Specialist
 
Member#: 145303
Join Date: Apr 2007
Chapter/Region: Tri-State
Location: PA
Vehicle:
2007 WRX TR
Crystal Metalic

Default

I have to say, SPT has a GOOD exhaust...not obnoxious, I don't know how quiet is compared to MadDad...but it looks stock, but SHINY! 3 inch catback...it sounds GOOD, good boxer rumble idle...but nothing loud really.

Plus WAY cheaper price! I got mine for 400 basicly. That is with the 20% off SPT deal I got at the dealership
jflexe99 is offline   Reply With Quote
Old 06-07-2007, 09:56 PM   #20
xxscaxx
Scooby Guru
 
Member#: 86459
Join Date: May 2005
Chapter/Region: Tri-State
Location: Campbell Hall, NY
Vehicle:
2013 BRZ
SWP

Default

maddad whisper all the way. i love it, and will never ever change it.
xxscaxx is offline   Reply With Quote
Old 06-07-2007, 10:33 PM   #21
CatfaceType-R
Scooby Guru
 
Member#: 81102
Join Date: Feb 2005
Chapter/Region: MWSOC
Location: Brushyoteefs@dentists.cats
Default

i think it looks good...my friend has whisper, i have a evo II like you...the evo II isn't the only one that tapers from 3" according to him
CatfaceType-R is online now   Reply With Quote
Old 06-08-2007, 03:18 AM   #22
Daddy's SCP
Former Vendor
 
Member#: 36596
Join Date: May 2003
Location: Leominster, Ma.
Vehicle:
2009 135i
Alpine White

Default

Quote:
Originally Posted by jflexe99 View Post
I have to say, SPT has a GOOD exhaust...not obnoxious, I don't know how quiet is compared to MadDad...but it looks stock, but SHINY! 3 inch catback...it sounds GOOD, good boxer rumble idle...but nothing loud really.

Plus WAY cheaper price! I got mine for 400 basicly. That is with the 20% off SPT deal I got at the dealership
The Whisper's are hand crafted in the US and the price reflects that. Despite what some might think the SPT is not a "JDM" built piece, the flanges are mild steel, if you mate to a 3" downpipe there is no flex( no flex joint ), the tip is not double walled....but the biggest difference of all is compare a catless WRX or STi with an SPT and a Whisper and you will immedialey know the difference..in particular when cruising on the highway for an hour or two. If you had two side by side you could also compare the welding quality difference. If you compare the price of a Whisper to any other US built exhaust that is all T304 the price is quite comparable, and even then the T304 stainless steel in the Whisper is thicker gauge than many(another factor that contributes to no drone in a wagon even without a resonator like others need). Then there is the fact that the Whisper uses a purpose built canister that was designed explict for it's application and use with a Subaru WRX and STi(our FXT Whisper uses a purpose built canister for that application as well rather than just fitting a longer tip to a WRX/STi exhaust) vs. the general purpose exhaust canisters used by others in muliple brand applications and simply made plug and play for a particular car. Then there are the unseen items such as gauge thickness of the stainless steel and the exhaust packing material. The Whisper uses a patented exhaust packaging that we import from Germany. It's expensive as hell but we like the quality and special attribuites it has(like getting quiter over time rather than blowing out and becoming louder). There are lots of pieces that make the price of an exhaust that are not totally apparent when you just see a shinny piece of metal. The most telling is whether or not you end up replacing it a year later due to tone quality (or lack of) after the packing material settles or when you add your downpipe, ect. It's been absolutely amazing to me the number of guys that have bought a Whisper to replace their existing exhaust. Seriously, I'd say a good 35% are guys already owned an aftermarket exhaust.

I didn't mean for this response to sound like a "volley" or defensive at $400 exhausts(I'm not picking on the SPT - heck we're a Bosal distributor and have been one of their larger resellers in the Subaru community and still are - their products are the best value you can get) and we know they prdoucts are a great value), but seeing that made me feel I should at least layout some details that contribute to the MadDad Whispers price. The reality is we should be selling it for $699 as it's the lowest margin product we make in the entire MadDad lineup. Hopefully we'll make up the difference in volume(no pun intended ) .

Happy Driving and enjoy the boxer rumble...
Rich
Daddy's SCP is offline   Reply With Quote
Old 06-08-2007, 08:22 AM   #23
silver-duck
Scooby Specialist
 
Member#: 130710
Join Date: Oct 2006
Chapter/Region: NWIC
Location: Wenatchee Wa.
Vehicle:
06

Default

Will it bolt up to cobb down pipe?[06 wagon] Thankyou, Mike
silver-duck is offline   Reply With Quote
Old 06-12-2007, 08:52 AM   #24
equipment junkie
Scooby Specialist
 
Member#: 97607
Join Date: Oct 2005
Chapter/Region: TXIC
Location: Houston, Texas
Vehicle:
2006 wrx
wrx blue

Default

I'm running a MadDad 3" whisper back on my '06 WRX - I love it and wouldn't trade it for anything!
I'm also running the maddad header & up pipe combo. I have a typical VF39 swap with an STI intercooler. The car spools from from just about idle, has plenty of power, and sounds GREAT!

P.S. I was running COBB ap map for the vf39 swap. Then I had Mohamad from
MZM in Austin, Tx protune the car last Fall. VERY mild tune (14 lb boost)
and it made 275 to 280 wheel hp on his conservative dyno...
equipment junkie is offline   Reply With Quote
Old 02-12-2009, 08:37 PM   #25
STInfection
Scooby Newbie
 
Member#: 133192
Join Date: Nov 2006
Vehicle:
2007 STi
UGM

Default straight-through muffler?

Is the madDad muffler a straight-through design? So I could take a flashlight and shine it inside the muffler and see all the way through to the piping on the other end without baffles obstructing the "circle" of exhaust flow. I can see through with my SPT, but it has huge semi-cirlce baffles that restrict exhaust path

Like this JIC muffler in these pics:

http://forums.nasioc.com/forums/show...tback+no+taper
STInfection is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Maddad whisper exhaust alwrxwu Private 'Wanted' Classifieds 1 12-16-2009 07:12 PM
WTB: Used Cobb, Borla Hush, Maddad Whisper Exhaust awd-box-turbo Private 'Wanted' Classifieds 1 05-25-2009 02:00 PM
Looking for a Maddad Whisper Exhaust SubyRex24 Private 'Wanted' Classifieds 2 09-30-2008 10:35 AM
What's your experience with Eneos oil? spoolinsti05 Service & Maintenance 17 11-30-2007 05:26 PM
Strut tops/camber plates...what's your experience? Red Rocket Brakes, Steering & Suspension 13 04-05-2002 12:08 AM


All times are GMT -4. The time now is 09:54 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.