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Old 08-08-2008, 12:13 AM   #1
Leggo
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Member#: 158613
Join Date: Sep 2007
Chapter/Region: NWIC
Location: PDX, Oregon
Vehicle:
2003 Legacy
Timberline Green Pearl

Default can someone give me a detailed list of what i will need to install an SIi catback?

i picked up an sti exhaust for 75 bucks and i need to figure out what i need to put it on my 03 wagon. from what i have read you need to cut the flange and reverse it, extend the pipe about 10 inches, re weld the hangers, extend the tip? and notch out the bumper. if anyone can give me a detailed list i would appreciate it. pictures would be cool too.
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Old 08-08-2008, 12:45 AM   #2
rougeben83
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Member#: 115154
Join Date: May 2006
Chapter/Region: MWSOC
Location: NYC
Vehicle:
2003 Legacy L Turbo
silver

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1) go to muffler shop
2) point at STi muffler
3) point at car
4) "I want that, in that"
5)???
6) PROFIT

Last edited by rougeben83; 08-08-2008 at 01:56 AM.
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Old 08-08-2008, 01:40 AM   #3
sadsack
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Chapter/Region: TXIC
Location: Aggieland
Vehicle:
2003 Legacy - RIP

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^^^^^

+1

The only thing I'd add is a to take it to a competent muffler shop.

Cheap welds and reused gaskets FTL . . .

BTW: I recently had Stromung break out their BH muffler jig for an axleback (same '03 wagon) . . . unfortunately intitial results render it a work in progress . . .
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Old 08-08-2008, 02:32 AM   #4
that one legacy
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Default

Quote:
Originally Posted by Leggo View Post
i picked up an sti exhaust for 75 bucks and i need to figure out what i need to put it on my 03 wagon. from what i have read you need to cut the flange and reverse it, extend the pipe about 10 inches, re weld the hangers, extend the tip? and notch out the bumper. if anyone can give me a detailed list i would appreciate it. pictures would be cool too.
i don't know why they would need to notch the bumper, unless the cut out for the stock tail pipe is really that small. if anything, the shop should be able to either just mount the muffler a bit lower (extend the hangers), or maybe rout the tail pip a little lower (which i admit would look really funny, but might be the only way). the STi tail pipe tip isn't that big.

otherwise i think you've pretty much got it down. expect to pay anywhere from $150-$200 for this install.
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Old 08-08-2008, 01:11 PM   #5
b4wantab
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Location: Oak Park, IL
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05 OB Black Bean
1969 W-30

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I did my own so here are some tips that may help, they may not.

The hangers will need to be moved, no big deal.

The bumper can't really be cut. My tip is about 1/2 inch below the bottom of the bumper.

I cut the pipe right after the axle. The STi piping is so much bigger matting the pipe at the flange wasn't going to happen. I cut where the pipe was basically horizontal. I then welded the STi pipe so that the ground clearance of both were the same. I cut slots on the top section of the Sti pipe and bent it down to contact the existing pipe. Then fill in the slots with weld. to me it looked much easier then adjusting the pipes at the muffer. That may sound complicated but is a real clean setup.

I extended the tip with a 2 1/2" long section of straight pipe that I had removed from the axle section.

The Sti stainless piping is a much higher quality than the BH stuff. Easier to weld to and I reused it extend the tip.

Sorry don't have any pictures but it worked out great. Great mod.

Peace,

Greg
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Old 08-08-2008, 08:26 PM   #6
Leggo
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Location: PDX, Oregon
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2003 Legacy
Timberline Green Pearl

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got the exhaust installed today, cost me 120 bucks. looks and sounds good.
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Old 08-09-2008, 06:18 PM   #7
that one legacy
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that's a good price. did you have the STi resonator and midpipe installed, or just the axleback? it cost me $190 to install mine.
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Old 08-10-2008, 04:21 PM   #8
Leggo
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Join Date: Sep 2007
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Location: PDX, Oregon
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2003 Legacy
Timberline Green Pearl

Default

Quote:
Originally Posted by that one legacy View Post
that's a good price. did you have the STi resonator and midpipe installed, or just the axleback? it cost me $190 to install mine.
yeah i got the res. and midpipe too, it has a nice low rumble at low rpm's but other than that it sounds stock. i like it though.
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Old 08-13-2008, 07:20 AM   #9
Jonathan
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Location: Natick, MA USA
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1999 Legacy GT Ltd
Quick Silver Metallic

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Quote:
Can someone give me a detailed list of what i will need to install an STi catback?
An STi ?

Getting an STi CBE to fit on a vehicle its not really designed to fit involves making some welds and maybe some pipe bends and lengthening and shortening a few things. Its not a direct fit. How you make it fit involves custom fabrication.

Seriously get an STP axle back muffler for your 2003 WAGON, a few replacement hangers and an exhaust gasket. Direct bolt in.
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Old 08-13-2008, 10:51 AM   #10
Huffer
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Location: Wellington,NZ / Willoughby,OH
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99 GF8 Impreza 2.0
2= 1998 BD + BK Legacy GT

Default

Jonathan - he already installed it. It's not a big deal. I have an STi axleback on my car along with a custom resonated midpipe. It was a straightforward 1hr job at a good muffler shop.
Flange welds are clean, sound is nice and rumbly.

Parts were cheaper than the SPT and it tucks up nicely too.
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