scoobydoobie Posted February 24, 2009 Share Posted February 24, 2009 Has anybody done it? I know some FXT/WRX owners looking for an inexpensive and quiet exhaust use them. The piping is 2.5" as opposed to 2.25". You can find an STI take off axleback for $50-100. Seems you'd just have to fab the up the piping to/for the y-pipe and make some changes to the hangers. Could be an option for those of us who want a good flowing axleback without all the noise. Thoughts? Link to comment Share on other sites More sharing options...
NutBucket Posted February 24, 2009 Share Posted February 24, 2009 Or just pick up a set of prodrive mufflers. I have to try really hard to hear them 95% of the time. Link to comment Share on other sites More sharing options...
scoobydoobie Posted February 24, 2009 Author Share Posted February 24, 2009 Yes, but even the prodrives will become significantly louder with changes to the UP/DP/EM/Mid/Y (which I'm planning to upgrade). I'm thinking that using sti mufflers may provide a better sound (as well as better looks/ little bit more flow) than running full aftermarket piping into the stock cans. Also while not being nearly as loud as running bigger pipes into aftermarket bolt-on "performance" mufflers. Link to comment Share on other sites More sharing options...
nekdut Posted February 24, 2009 Share Posted February 24, 2009 Prodrives are also 2" at the inlet, not 2.5", for those going for end-to-end smooth flow, and they are fairly loud on a wagon with full 3"/2.5" piping. I have been very curious about dual STI mufflers as an option on wagons for a reduced-drone version with full piping. Link to comment Share on other sites More sharing options...
scoobydoobie Posted February 24, 2009 Author Share Posted February 24, 2009 Prodrives are also 2" at the inlet, not 2.5", for those going for end-to-end smooth flow, and they are fairly loud on a wagon with full 3"/2.5" piping. I have been very curious about dual STI mufflers as an option on wagons for a reduced-drone version with full piping. Yeah, it could be a cheap upgrade if done right too. Let's say you find two STI mufflers for $150. Then pay an exhaust shop say $100 to bend the hangers and fab the short amount of piping into your Cobb or Perrin Y pipe. Should be fairly quiet and mostly drone free. Plus would look good with the slightly bigger tip and "STI" engraved on the sides. [ame=http://www.youtube.com/watch?v=EO-T4vNeZgo]YouTube - Subaru Forester XT HKS stage 2 STI axleback[/ame] Link to comment Share on other sites More sharing options...
mikeislord Posted February 24, 2009 Share Posted February 24, 2009 How much better do STI cans flow compared to LGT cans? I can't imagine they could be THAT much better and be just as quiet. Link to comment Share on other sites More sharing options...
strykr Posted February 25, 2009 Share Posted February 25, 2009 Where are you finding them for ~$150?? Link to comment Share on other sites More sharing options...
Verwilderd Posted February 26, 2009 Share Posted February 26, 2009 I'd save yourself the money...Unless you are trying to make major power gains in the future, the stock CBE flows more than enough. You won't realize any major gains by switching and IMO wouldn't be the best bang for the buck. Now unless you don't like the looks of the Legacy exhaust, I wouldn't touch it. Link to comment Share on other sites More sharing options...
Verwilderd Posted February 26, 2009 Share Posted February 26, 2009 Otherwise, if you want to change the exhaust and want it quiet, the SPT is actully a VERY conservative exhaust. Link to comment Share on other sites More sharing options...
scoobydoobie Posted March 3, 2009 Author Share Posted March 3, 2009 well I found the measurements of the STI cans. The muffler is 16.5" long, 10" wide and 9 1/4" tall. The tip is 7 1/4" long. Once the snow clears up more, I can get under the car and measure the stock cans to see if this project is feasible or not. I'm thinking the STI can will be too tall to fit in the LGT cut outs but we'll see. Link to comment Share on other sites More sharing options...
btlegacy Posted March 16, 2009 Share Posted March 16, 2009 I am interested in this as well since I allready own an STI muffler and could pick up another one for around $75 2005 Legacy GT 5MT Buy my stuff Here So I can build my 6.0L V8 Legacy GT Here Link to comment Share on other sites More sharing options...
06Limited Posted March 16, 2009 Share Posted March 16, 2009 If anyone is interested, I have a full sti exhaust sitting in my garage. I'd like to get $75 for the axle back/ muffler portion. Of course you would also have to figure in shipping costs of $25-$50. Shoot me a message, if interested. Link to comment Share on other sites More sharing options...
Daedalus Posted March 18, 2009 Share Posted March 18, 2009 So lemme clarify. You're thinking of taking two WRX/STi axelbacks, and cutting off the piping to turn them into "universal" mufflers. Then taking the cans to an exhaust shop and having them fab up the pipes/flanges to the LGT y-pipe? Sounds pretty cool if thats what you're doing. Link to comment Share on other sites More sharing options...
scoobydoobie Posted March 18, 2009 Author Share Posted March 18, 2009 So lemme clarify. You're thinking of taking two WRX/STi axelbacks, and cutting off the piping to turn them into "universal" mufflers. Then taking the cans to an exhaust shop and having them fab up the pipes/flanges to the LGT y-pipe? Sounds pretty cool if thats what you're doing. Yeah, that's pretty much the idea. Still in the brainstorming stage as I've got a lot of things to do (and parts to install first) before I tackle this project. It's nice today though, I will try and measure the stock cans and see if this is feasible. Link to comment Share on other sites More sharing options...
scoobydoobie Posted March 18, 2009 Author Share Posted March 18, 2009 Nm Link to comment Share on other sites More sharing options...
Daedalus Posted March 18, 2009 Share Posted March 18, 2009 I found some pictures of the STI axle back. There are a few things that I'd be concerned about. First is the height of the can. It looks pretty tall. Also, the location of the tip seems very low (which could be exacerbated by height of the can). Vertical fitment and centering the tip could be an issue. Also, the can itself isn't symmetrical. The tip exits out of the center and the pipe enters on the right (passenger side) of the can. Could make fitting on the passenger side of the car a little more difficult. Other than that, I'm VERY interested in how this works. Especially since I know two people with STIs that also have aftermarket exhausts. Do you (or anyone else for that matter) know of the internal design of the STI cans? They are not straight through designs are they? Link to comment Share on other sites More sharing options...
btlegacy Posted March 18, 2009 Share Posted March 18, 2009 I have an STi can on hand and will take of one of mine this weekend and see how this one fits in the space. Sinced the piping goes to the side i think it could be cut so it meets the Y-pipe correctly 2005 Legacy GT 5MT Buy my stuff Here So I can build my 6.0L V8 Legacy GT Here Link to comment Share on other sites More sharing options...
scoobydoobie Posted March 18, 2009 Author Share Posted March 18, 2009 Good points Daedalus. btlegacy, that would be awesome if you could to that. I just took some rough measurements of one of the stock cans: It's a little under 13.5" long, little under 10" high, and width is around 10.5". The tip is 6" on the bottom and 6 3/4" at the top. Link to comment Share on other sites More sharing options...
johndas Posted March 18, 2009 Share Posted March 18, 2009 I roll the STI Quads on my 05 wagon...with stock from there back! Sound is equal to a stock 09 STI...from a dealership comparison...they tuck under a bit but sound perfect in my opinion! J Link to comment Share on other sites More sharing options...
btlegacy Posted March 18, 2009 Share Posted March 18, 2009 The one I have from an 05 STi is 16.5" long, 9" high, and width is 10" at widest point and 6.5" at the top, the tip is 4"x4.5" so looks to be pretty close 2005 Legacy GT 5MT Buy my stuff Here So I can build my 6.0L V8 Legacy GT Here Link to comment Share on other sites More sharing options...
tealdub Posted March 19, 2009 Share Posted March 19, 2009 I roll the STI Quads on my 05 wagon...with stock from there back! Sound is equal to a stock 09 STI...from a dealership comparison...they tuck under a bit but sound perfect in my opinion! J I love that look. Where can I source some STi quads for my car? Link to comment Share on other sites More sharing options...
johndas Posted March 20, 2009 Share Posted March 20, 2009 Jimmy @ HKC Speed http://www.hkc-speed.com/index.php?act=viewCat&catId=71 GL J Link to comment Share on other sites More sharing options...
BAC5.2 Posted March 20, 2009 Share Posted March 20, 2009 The STi quad look looks incredible. You win. [URL="http://legacygt.com/forums/showthread.php/proper-flip-key-interesti-159894.html"]Flip Key Development Thread[/URL] "Genius may have its limitations, but stupidity is not thus handicapped." - E. Hubbard Link to comment Share on other sites More sharing options...
tealdub Posted March 20, 2009 Share Posted March 20, 2009 Jimmy @ HKC Speed http://www.hkc-speed.com/index.php?act=viewCat&catId=71 GL J Thanks, but they havent been in stock for awhile. Anywhere else? Link to comment Share on other sites More sharing options...
scoobydoobie Posted March 20, 2009 Author Share Posted March 20, 2009 Yes the STI quads look great, and those are what I'd really want. $925+ shipping though?! No thanks. Back OT, fitting USDM WRX STI cans on a LGT. Link to comment Share on other sites More sharing options...
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