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Old 09-09-2010, 02:52 AM   #1
CKxx
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Your BOV sounds lame
93 RX7+09 Forester

Default 2003 WRX Muffler ---> 2007 2.5i

Will a 2003 WRX muffler fit a 2007 2.5i?
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Old 09-09-2010, 03:16 AM   #2
J-Chow
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axelback only. Catback requires rotating of the flange or something like that iirc.
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Old 09-09-2010, 09:07 AM   #3
Gr3en
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^^^ What he said.
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Old 09-09-2010, 11:11 AM   #4
RaineMan
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Is it any louder to just do a muffler swap? I love the dual outlet stock mufflers that the older WRXs had and want a little bit more sound.
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Old 09-10-2010, 02:21 AM   #5
Audi20Tdriver
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I would recommend searching the forum for wrx muffler chirp. Back When I had my 2005 RS I needed a WRX muffler for about a month between the loud crappy obnoxious setup I had for my first exhaust mod.. and the stromung setup with borla replicas I ended up getting.. Anyhow.. back then it was much more prevalent to have WRX mufflers from bug eyes swapped to the RS because there was only a year or two in age difference between the 04/ 05 RS and the WRX . It seems that lots of people reported the dual tipped WRX muffler making a chirping sound like a bird. Once the larger single tip WRX came out on the 05, the chirping went away.. the WRX axleback had basically zero impact on my car other then the larger silver tip looked nicer then the little RS one. The chirping was a result of usage on the RS..
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Old 09-10-2010, 02:29 AM   #6
EdHilario
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My friend with a SpecR1 (Sonic Yellow 03 WRX) put his axleback on his sister's 07 2.5i with no problems. Just be sure to get a new gasket.
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Old 09-10-2010, 06:58 PM   #7
Audi20Tdriver
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^ there will def be a chirp whether she has heard it or not yet. It is in the tip design.. can happen on any 02 -04 WRX axleback which is the twin tip years. Just thought I'd throw that out there to research.. most of the newer subaru crowd is prob not aware of such issues. Is it a big deal? that's up to the user..
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Old 09-11-2010, 08:13 PM   #8
kero
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Yes, I have a 04 wrx axleback that I had for a period of time and it chirped on start up, turn off and after revving the engine and idle falls down.

It was not that annoying, funny actually.....

Most interesting though is that with my UEL setup and no cats, the 04 wrx muffler had more burble than the 07 wrx axleback I have on now.
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Old 09-12-2010, 10:06 AM   #9
CKxx
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Thanks guys. It is for my girlfriend. She just picked up a 2.5i and I've got a couple WRX exhausts in my basement. She asked if I could make it a tiny bit louder.
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Old 09-13-2010, 03:38 AM   #10
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Quote:
Originally Posted by CKxx View Post
Thanks guys. It is for my girlfriend. She just picked up a 2.5i and I've got a couple WRX exhausts in my basement. She asked if I could make it a tiny bit louder.
Could you make mine a tiny bit louder too? lol
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Old 09-13-2010, 01:58 PM   #11
A1y50n
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I have an 04 wrx axelback and truthfully, it's not any louder nor do I feel a difference in power. If anything, it's asthetically pleasing.
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Old 09-13-2010, 06:17 PM   #12
Audi20Tdriver
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ya you won't notice anything from a WRX muffler. The 04- 07 STi might make that very SLIGHT difference, but on a bone stock system even that wont do much.

removing a resonator with one of those mufflers esp the STI would increase the sound.. the best thing to make the car a bit louder is to remove the intake silencer / resonator... or get an intake.. but I'm not a fan of what it does to the tq and that's a whole different thread..
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Old 09-14-2010, 12:12 AM   #13
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just do a full sti catback. im running that on my 06 obs and it's purrrrfecttt.... a little louder than stock and has a nice pur to it. yeah, i did have to cut the midsection and extend it about 3inchs but it's not as hard as people complain it to be.
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Old 09-14-2010, 01:03 AM   #14
CKxx
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Your BOV sounds lame
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Quote:
Originally Posted by fenrizwolf View Post
Could you make mine a tiny bit louder too? lol
I honestly may have two mufflers...I'll check tomorrow.

Quote:
Originally Posted by Audi20Tdriver View Post
ya you won't notice anything from a WRX muffler. The 04- 07 STi might make that very SLIGHT difference, but on a bone stock system even that wont do much.

removing a resonator with one of those mufflers esp the STI would increase the sound.. the best thing to make the car a bit louder is to remove the intake silencer / resonator... or get an intake.. but I'm not a fan of what it does to the tq and that's a whole different thread..
I will try the WRX muffler alone at first and see what she says. I'll definitely keep the STi version in mind. Thank you.
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Old 09-14-2010, 11:23 AM   #15
larson701
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Bmobs06,

Was the section you added steel or SS?

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Old 09-14-2010, 12:46 PM   #16
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here's what i did; i dicked around with adapters at first cause that's what previous people did on their diy's. then it struck me duhhh...





i only had it clamped that day, the next day i got it welded. i only did the sti catback cause i only bought it for $80 with the downpipe.
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Old 09-14-2010, 02:25 PM   #17
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Thanks! Many of the catbacks are 304SS, something I cannot work with. Clever kludge. The rust where your addition was made tells me that I could weld an extension to the pipe at some point.

My daughter and I work on her 2006 Impreza together. I am researching 'inexpensive' exhaust modifications. Making the car sound better is at the top of the list.
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Old 09-14-2010, 03:21 PM   #18
bmobs06
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if you can get a cheap wrx or sti midsection extending the pipe doesnt take much effort. all you got to do after is figure out what kind of axle back you want.
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Old 09-14-2010, 07:45 PM   #19
swede978
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Quote:
Originally Posted by bmobs06 View Post
here's what i did; i dicked around with adapters at first cause that's what previous people did on their diy's. then it struck me duhhh...





i only had it clamped that day, the next day i got it welded. i only did the sti catback cause i only bought it for $80 with the downpipe.
You need to get a "Thank you!"

Smart idea I just wish I would have thought about it.
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Old 09-14-2010, 08:02 PM   #20
berylthemessiah
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this is what i did with a 05 wrx catback on my 07 2.5i, it made it a little louder but nothing to noticable, i got the catback for free and cost like 30-40 bucks to have a shop weld in the extension piece in place of the chamber, i also prefer how the tip looks



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