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Old 11-04-2001, 06:55 PM   #1
Caron
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Join Date: Sep 2000
Location: Montreal, Quebec, Canada
Vehicle:
2000 Impreza Wagon &
2007 Legacy Wagon 2.5i

Question Has anyone installed a WRX muffler on a GC8/GF8 ?

I have a MY00 L wagon (a Brighton up here) and I'd like to do this install. I already have the muffler (got it for a song) but I'm curious to find out if anyone else has done it.

Thanks
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Old 11-04-2001, 09:26 PM   #2
milkman
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Sedona Mars Red Pearl

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Originally posted by mrbell
(Backstory(skip ahead if you don't really care): So I built myself an exhaust, but it is honestly too loud for me to drive on the street. I probably wake everyone in my apt complex when I come home late at night... so I was trying to figure out how to quiet it down and came upon an idea. I realized that the WRX exhaust has a 2.5" midpipe, w/ resonator, decent looking tips, and alot of people are taking theirs off because 2.5" isn't much for a turbo. On an RS, tho, it might be about right. I was all set to take the midpipe to a shop and get the proper flange welded on to bolt up to my cats, when I had a

scary idea:
Since I've already got the WRX exhaust, and it almost fits(needs a new flange, and some of the hangers aren't in the right place), what about the cats as well? If I recall, there are 3 cats on a WRX, 1 before the turbo, 1 angled that makes the turn from the downpipe to the 3rd cat which sits similar to the last cat in the RS. So, if you turn the angled cat so it sits like the RS's cat, and change that flange to bolt to our headers, it seems like a good way to get a decent flowing headerback, legal(important part here), and environmentally friendly, and possibly very cheap. Of course the cat on the up-pipe doesn't get used, but what does everyone think?)
Search under cheap environmentally for his post

Last edited by milkman; 11-04-2001 at 09:33 PM.
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Old 11-04-2001, 09:31 PM   #3
Caron
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Sorry Milkman but your link doesn't work!
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Old 11-04-2001, 09:35 PM   #4
milkman
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Quote:
Originally posted by Caron
Sorry Milkman but your link doesn't work!
Ya I seen that hear you go
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Old 11-04-2001, 09:49 PM   #5
mrbell
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wow, I'm quoted... kick ass...
anyway... I'm gettin' some work done on Tuesday. I found a guy who is supposed to do really good work and he's right down the street!

Anyway, I think what I'm going to do is get him to make me a midpipe(2.25") that I can bolt the muffler up to... the stock wrx midpipe is a little too short and possibly too large(2.5", I believe). I still need to talk to the guy and see what he thinks. I think the muffler will be good tho. I'll post when I get it done
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Old 11-04-2001, 11:36 PM   #6
North Ursalia
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The muffler will fit fine, but the midpipe is indeed different. The flange where the midpipe would meet our rear cat (using my 2000 RS as an example) is about 90 degrees off- if you cut that flange off and turned it and rewelded it, the center pipe would fit. Probably easier to have the center custom made though.

Brian
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Old 11-05-2001, 01:16 AM   #7
mrbell
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The WRX midpipe is a little bit more different than just cutting and turning the flange... the WRX midpipe flange is too large to bolt up to the stock RS cat flange. if you butt the two together, you could see the inside of the midpipe thru the bolt holes of the RS. Also, the WRX midpipe is a few inches shorter than the RS's midpipe... they're close, but not quite.
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Old 11-05-2001, 09:56 AM   #8
Revision
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You can do a search as I posted the install instructions for these a while back. But the pictures are no longer at that site.

These pictures should give you an idea of what to expect.

The flange is indeed off by about 10 to 20 degrees and the holes are further apart. I had to slot the flange on my stomung midpipe to get it to fit. The last being the 3rd hanger which is about 2 inches off and had to be cut and rewelded.

You might be better off trying to find an old RS muffler to try to fit to that wagon as it will bolt up with no fittiment issues.
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Old 11-05-2001, 10:09 AM   #9
cvalle-sd
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I have a version 6 muffler with a strohmung mid-pipe. the flange at the muffler input has to be cut/rotated, but any private (non-midas, etc) muffler shop should do it for a Jackson.
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Old 11-05-2001, 03:27 PM   #10
steve_d
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I did this to my MY98. I just used the WRX muffler section on the 2.5 RS b-pipe.

The flange needed to be rotated, I had them just reuse the stock flange from my old MY 98 muffler, and they welded it up to the WRX pipe. The pipe hanger needed to be turned around and moved also. The RS hangers are more toward the centerline of the muffler. The bozo actually left the WRX muffler hanger on there. I can take a pic of it if you like so you can see the difference.

sjd
grand total cost...70 bucks
smile factor.....priceless.
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Old 11-06-2001, 09:31 PM   #11
mrbell
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I had a custom mid-pipe made... it turns out the WRX muffler and midpipe from rear-most hanger(s) to cat flange is about 1.5" shorter than the RS's. He cut up a piece of stock RS exhaust to get the proper flange, welded it to the 2.25" midpipe, and welded a flange that matched the WRX muffler. He also welded an extension onto the WRX muffler hanger that doesn't like up, so it will reach the RS hanger mount.
It fits very well and the work he did was excellent. One thing is that it's very quiet... I'm not complaining, but it's SO different than the 2.5" catback w/ dual tip magnaflow. I kinda miss the low grumble the magnaflow had, but I definitely don't miss not hearing ANYTHING at anything over 50mph. It also seemed to make the car run a bit smoother, but I attribute that to the sound that the old system put out shaking the fillings loose in my teeth...
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