Welcome to the North American Subaru Impreza Owners Club Thursday September 18, 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 > Normally Aspirated 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 06-04-2004, 08:32 AM   #1
robertg
Scooby Newbie
 
Member#: 62727
Join Date: May 2004
Chapter/Region: Tri-State
Location: Northeastern NJ
Vehicle:
2004 2.5TS Wagon
Green

Default Stock WRX Exhaust on '04 2.5TS Wagon?

Do you guys know if this will fit? May be just the cat back? muffler? Also if any of it can be used, would there be any gains or changes in sound. Any info would be greatly appreciated. Thanks!
* Registered users of the site do not see these ads.
robertg is offline   Reply With Quote
Old 06-04-2004, 11:42 AM   #2
poison
NASIOC Supporter
 
Member#: 37678
Join Date: May 2003
Chapter/Region: SCIC
Default

Yes, it will fit! I just installed the stock WRX muffler I picked up for free and the midpipe I got for $20. It is awesome!

I searched and read all the threads on this and posted a couple times before I got the stuff and got no clear answer: some people said it made no difference, some said it was OK but not worth it, etc.

I will say it is very different and depending on what you pay for the parts, very worth it. It cost me a total of $20 parts + $50 labor.

The TS is silent at idle, and quiet at WOT when stock. Now my car has a VERY deep rumble to it that you can hear with all windows closed but is not intrusive at idle, and at WOT has much more of a snarl. I actually set of a (single) car alarm yesterday. I can hear it while cruising at freeway speeds, but it is not annoying.

It got my wifes two thumbs up (she drives a Passat)! And of course it looks very nice, classy and sporty. Sweet!

My car feels significantly torquier and stronger. It feels like it pulls harder, and doesn't bog down as easily if I don't give enough gas off the line.


I am really happy I did it. Just realize it will not be like a Stromung or anything, but you could add Borla headers to my setup and get a rip-snorting boxer rally sound.

I highly recommend it!
poison is offline   Reply With Quote
Old 06-04-2004, 11:46 AM   #3
poison
NASIOC Supporter
 
Member#: 37678
Join Date: May 2003
Chapter/Region: SCIC
Default

Oh, yeah, they will have to cut and rotate a flange on the midpipe and add a piece that flares from the stock 1.75 to 2.25. They cut my TS midpipe to get the right size flange, so keep that in mind. Unless the place you go to has the necessary flange they will cut your stock midpipe and you will not be able to go back to stock.
poison is offline   Reply With Quote
Old 06-06-2004, 11:33 PM   #4
robertg
Scooby Newbie
 
Member#: 62727
Join Date: May 2004
Chapter/Region: Tri-State
Location: Northeastern NJ
Vehicle:
2004 2.5TS Wagon
Green

Default

I am getting an axle back soon hopefully. I just want to make sure that I can use the stock midpipe just by midfying the flange, right? Any other info would be greatly appreciated. Thanks.
robertg is offline   Reply With Quote
Old 06-07-2004, 10:51 AM   #5
linsavy
Scooby Specialist
 
Member#: 11620
Join Date: Oct 2001
Location: Ontario
Vehicle:
1997 GF4-STiV3 clone

Default

You should get a custom midpipe of 2" or 2.5" to go with the WRX muffler to take advantage of the increased flow.
linsavy is offline   Reply With Quote
Old 06-07-2004, 10:57 AM   #6
poison
NASIOC Supporter
 
Member#: 37678
Join Date: May 2003
Chapter/Region: SCIC
Default

Hmmm, you could use your stock TS midpipe, but they will have to cut it and weld in a section that flares from 1.75 to 2.25 (because that is what the WRX axleback piping is) and weld on a larger flange.

Also, you will probably not get the increase in power or sound that I did if you keep the stock 1.75 in midpipe. I got a WRX stock 2.25 in midpipe and cut and welded that. It looked like the stock TS midpipe had two resonators, whereas the WRX one had just one, which allows for more sound, plus the additional 1/2 in diameter helps a lot too.

I would recommend picking up a WRX midpipe for cheap, or just have a shop make a custom midpipe (should cost $50-$100). I paid $20 for my WRX midpipe.
poison is offline   Reply With Quote
Old 06-07-2004, 11:40 AM   #7
robertg
Scooby Newbie
 
Member#: 62727
Join Date: May 2004
Chapter/Region: Tri-State
Location: Northeastern NJ
Vehicle:
2004 2.5TS Wagon
Green

Default

I will see if I can get the midpipe too. So, by using the WRX midpipe, I will then have a new catback instead of an axleback. Then they will have to change the flange at the cat to make that fit the new midpipe. If I am wrong or not understanding, please clarify this for me. Thanks.
robertg is offline   Reply With Quote
Old 06-07-2004, 12:38 PM   #8
poison
NASIOC Supporter
 
Member#: 37678
Join Date: May 2003
Chapter/Region: SCIC
Default

Yeah, it'll then be a catback. Don't cut the catpipe! Have them cut the midpipe. They will 1) cut the TS midpipe to scavenge the flange that matches the catpipe flange 2) cut the flange plus a couple inches off of the WRX midpipe 3) weld a section of pipe that flares from 1.75 to 2.25 to the WRX midpipe and weld the TS flange on the small end of the flared section. Now you have a 2.25 midpipe that tapers to 1.75 where it attaches to the catpipe. The other end obviously fits right up to the axleback. All the cutting and welding should be done on the midpipe.

Once you have the WRX midpipe, any wrx axleback will fit. Nice!

If you don't mind, PM me once youve done it, I am curious to see whether you have the same results I did: more power and better sound.
poison is offline   Reply With Quote
Old 06-07-2004, 01:57 PM   #9
robertg
Scooby Newbie
 
Member#: 62727
Join Date: May 2004
Chapter/Region: Tri-State
Location: Northeastern NJ
Vehicle:
2004 2.5TS Wagon
Green

Default

Thanks for all the info. You wouldn't happen to have a sound clip? I just want to make sure that the sound is aggressive without being loud. Thanks again.
robertg is offline   Reply With Quote
Old 06-07-2004, 02:38 PM   #10
poison
NASIOC Supporter
 
Member#: 37678
Join Date: May 2003
Chapter/Region: SCIC
Default

I don't, and even if I did, i would have no idea how to post it !

If it was a 0 (silent) in the stock state on the noise scale at idle, my car is now a 3. So still quiet, but there is a deep rumble that you can hear/feel. During hard accelleration, it has more of a snarl, and while cruising on the freeway, windows up, I can still hear some bass from it, but no drone at all.

In first and second gear it is surprising how much louder it is, compared to stock, but no where near a stromung or even Prodrive.

Look, I got my axleback for free, so i paid a total of $70 for the midpipe and its modification. If I want more sound, I can just buy another axleback and bolt it up: the midpipe is ready for it.

I don't think you will see any more power gains with another louder exhaust than with this one though. I think this gave me the max power increase I can get with a midpipe and freer-flowing axleback.

Someone offered me a stromung for $170 and I'd love to buy it, but I don't have the cash and can't really justify $170 just for sound. I wish I could!

I am used to this sound level now and want more...
poison 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
wtb EXHAUST FOR MY 2.5ts wagon jessicamarie Private 'Wanted' Classifieds 0 06-02-2009 08:45 PM
Coilovers on a 2.5TS wagon subie502 Newbies & FAQs 3 02-16-2009 09:43 PM
04 prodrive wrx exhaust on 02 2.5TS wagon? specificcivic Normally Aspirated Powertrain 4 02-26-2006 12:41 AM
Price on '04 2.5TS Jonny Vancouver Impreza Club Forum -- VIC 4 01-10-2005 01:25 AM
stock wrx exhaust on a 2.5RS good idea? azncandyman Normally Aspirated Powertrain 6 05-14-2004 07:58 PM


All times are GMT -4. The time now is 06:01 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.