Welcome to the North American Subaru Impreza Owners Club Sunday April 20, 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 11-23-2001, 11:23 AM   #1
Richard L.
Scooby Specialist
 
Member#: 8465
Join Date: Jul 2001
Chapter/Region: NWIC
Location: Puget Sound, WA
Vehicle:
'00 2.5RS Coupe, AW
'93 GMC Typhoon AWD

Default STi Muffler Question

I am looking at a used STi stainless steel muffler mounted on a '99 Outback Sport. Does anyone know if this muffler would fit my '00 2.5RS coupe? Thanks.

--
Richard
http://www.whitetyphoon.com/impreza/
Richard L. is offline   Reply With Quote
Old 11-23-2001, 11:58 AM   #2
jeffg
Scooby Guru
 
Member#: 2958
Join Date: Nov 2000
Chapter/Region: NWIC
Vehicle:
2001 WRX (GC8)

Default

The STI muffler has a slightly different flange on it where it meets the midpipe. If the muffler is already intalled on an OBS then they already fixed the flange or you need to try and get the midpipe also.

In short, the muffler will fit, but you need to change that flange if you are using a stock midpipe.

Jeff
jeffg is offline   Reply With Quote
Old 11-24-2001, 11:59 AM   #3
Faraz
What?...
Do they speak English in What?

Moderator
 
Member#: 1459
Join Date: May 2000
Chapter/Region: Tri-State
Location: Allentown
Vehicle:
2008 WRX 5door MT
WR Blue

Default

I'd want a pic first because a REAL STi muffler does not come with a 4" tip or anything close its only 2.25 ....the only thing you would have to change is the midpipe.

stock 1.75" STi 2.25"

side shot vs stock
Faraz is offline   Reply With Quote
Old 11-26-2001, 08:41 AM   #4
omahasubaru
Scooby Guru
 
Member#: 1594
Join Date: Jun 2000
Chapter/Region: MWSOC
Location: Gretna, NE
Vehicle:
1995 WRX
2002 Legacy

Default

Hmmm...
Quote:
stock 1.75" STi 2.25"
Got a tape measure??
The inlet to the back box on a stock exhaust is 1.75".
The inlet to an STi version 4-6 back box exhaust is 2.25".
The tips are much larger. I haven't measured them myself, but look at your inlet and outlet. They aren't the same size. the inside diameter of the STi tip is the exact same size as the outside diameter of the stock tip (fits inside it).

If this has a midpipe you'll be fine otherwise you can get a custom one made to fit the back box's flange, not need to touch the back box inlet. SPD tuning sells/makes midpipes to fit these back boxes.. might want to contact Mike if you need help.
omahasubaru is offline   Reply With Quote
Old 11-26-2001, 09:47 AM   #5
AaronBBrown
Scooby Newbie
 
Member#: 12004
Join Date: Nov 2001
Chapter/Region: NESIC
Location: Natick, MA
Vehicle:
2006 WRX Ltd Wagon
Crystal Gray Metallic

Default

Ok...if this is a dumb question, just ignore me...

What kind of HP increase can you expect from the STi muffler? I have a WRX.

On a side note...in the WRX that compares the 330xi, A4, and WRX, they show a silver WRX driving through the rain. When they do a closeup on the tailpipe, it is clearly an STi muffler...but it's on the wrong side of the car. Did someone stick the film in upside down?!?
AaronBBrown is offline   Reply With Quote
Old 11-26-2001, 10:56 AM   #6
omahasubaru
Scooby Guru
 
Member#: 1594
Join Date: Jun 2000
Chapter/Region: MWSOC
Location: Gretna, NE
Vehicle:
1995 WRX
2002 Legacy

Default

Quote:
What kind of HP increase can you expect from the STi muffler? I have a WRX.
Free flowing and larger exhaust does more on a turbo car than a N/A car. I have no idea the power gains for your WRX from just the pricey STi exhaust (back box only). This is however the N/A powertrain forum so I suggest you post in the Factory Turbo forum to receive better answers as that is where the question belongs.
omahasubaru 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
STi Muffler question The White Pony Newbies & FAQs 1 07-18-2008 12:27 AM
JDM STI Spec-C Muffler vs. USDM STI Muffler mdungelman Factory 2.5L Turbo Powertrain 0 04-02-2007 05:15 PM
Questions about STi mufflers & free flow jim333 North West Impreza Club Forum -- NWIC 0 04-17-2004 10:21 AM
questions regarding STi Muffler darkest2000 Factory 2.0L Turbo Powertrain 1 12-12-2001 11:29 PM


All times are GMT -4. The time now is 10:09 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.