Legacy 2.5i exhaust options

rs2.5-3.0 · 03-30-2008, 03:23 PM

Just curious as to what will work for a 2008 Legacy 2.5i?? Any issues w/ CEL?

Any NA headers out there? i hear that GT exhausts (mufflers) should bolt up to the 2.5i's. Can anyone confirm?

Thx,

Brian

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penguin311magic · 03-30-2008, 05:08 PM

go to boxer4racing.com. The Borla headers might work as long as you get the high flow cat and the borla hush catback. But ask them first

PA-Outback2000 · 03-31-2008, 02:36 AM

also from boxer4racing, check stromung. when u add headers, u may throw a CEL. just doing cat and catback won't. i have a random tech cat and stromung exhaust on mine and love it. see what they have for the 2008's though.

LTracer · 03-31-2008, 02:23 PM

Quote:

Originally Posted by PA-Outback2000

also from boxer4racing, check stromung. when u add headers, u may throw a CEL. just doing cat and catback won't. i have a random tech cat and stromung exhaust on mine and love it. see what they have for the 2008's though.

installing a HFC won't throw a CEL? are you guessing? New cars are VERY sensitive emissions wise, alot more so than your '00. I believe 07-08 legacy's are PZEV rated and a HFC could easily throw a CEL.

Furthermore these car's can't be open sourced tune yet as they are CAN-BUS (essentially OBD 2.5), although I think the ROMraider guys are working on it as we speak.

rougeben83 · 03-31-2008, 05:08 PM

His car has the factory EL header like the other 2.5i's, and he'll need to get his catback midpipe re-bent to fit the older style HFC. Using the catback for an LGT would probably be your best bet if you want something premade (still need to have it modified to fit the HFC).

Also check how many 02 sensors you have. The headers from the older cars don't have 02 sensor bungs on them; I think the new Legacy 2.5i's at least have 2 02 sensors on the headers that you'll need to have bungs welded on for.

Pics from a 2.5i Legacy (actually these are my headers when installed by the previous owner)

penguin311magic · 03-31-2008, 07:50 PM

Yea, with the newer models, you need to get the HFC for the whole setup to bolt on. I'm scared to do it now, even though I have the cat-back sitting in my room :-(

PA-Outback2000 · 04-01-2008, 03:59 AM

my bad... thought the 8 was a 0. yes the new ones are more strict.

rs2.5-3.0 · 04-04-2008, 07:40 PM

so i'm screwed as far as just bolting up a header and calling it a day. damnit.

i know power isn't going to be made but i want the rumble back.

Hondaslayer · 04-04-2008, 08:06 PM

Quote:

Originally Posted by rs2.5-3.0

so i'm screwed as far as just bolting up a header and calling it a day. damnit.

i know power isn't going to be made but i want the rumble back.

GT mufflers will bolt on. The centre pipe looked like it would fit, but I was too cheap to buy a new donut gasket so I did not try.

I did bolt on the GT mufflers to the wifes Legacy though. Looks nicer, might be a tiny bit throatier, but that could just be me justifying the ten minutes I took installing it

PA-Outback2000 · 04-05-2008, 05:12 AM

headers should work. try borlas. stromung or any other catback should just bolt up. check boxer4racing.com to make sure they still do exhausts for ur year. i think their's were dual-tip mufflers, but can do single tip if u really wanted to.

rougeben83 · 04-05-2008, 01:55 PM

Quote:

Originally Posted by hondaslayer

GT mufflers will bolt on. The centre pipe looked like it would fit, but I was too cheap to buy a new donut gasket so I did not try.

I did bolt on the GT mufflers to the wifes Legacy though. Looks nicer, might be a tiny bit throatier, but that could just be me justifying the ten minutes I took installing it

Right, you basically need to get the catalytic section from an older car and rework how your catback mates up to it.

The pic I posted, that's pretty much what the guy did.

03-30-2008, 03:23 PM	#1
rs2.5-3.0 Scooby Specialist Member#: 52933 Join Date: Jan 2004 Chapter/Region: MWSOC Location: Brunswick, OH Vehicle: 2008 LGCY2.5iSE.5.mt want to do an STi conv ;)	Legacy 2.5i exhaust options Just curious as to what will work for a 2008 Legacy 2.5i?? Any issues w/ CEL? Any NA headers out there? i hear that GT exhausts (mufflers) should bolt up to the 2.5i's. Can anyone confirm? Thx, Brian * Registered users of the site do not see these ads.

03-31-2008, 05:08 PM	#5
rougeben83 Scooby Guru Member#: 115154 Join Date: May 2006 Chapter/Region: MWSOC Location: NYC Vehicle: 2003 Legacy L Turbo silver	His car has the factory EL header like the other 2.5i's, and he'll need to get his catback midpipe re-bent to fit the older style HFC. Using the catback for an LGT would probably be your best bet if you want something premade (still need to have it modified to fit the HFC). Also check how many 02 sensors you have. The headers from the older cars don't have 02 sensor bungs on them; I think the new Legacy 2.5i's at least have 2 02 sensors on the headers that you'll need to have bungs welded on for. Pics from a 2.5i Legacy (actually these are my headers when installed by the previous owner) Last edited by rougeben83; 03-31-2008 at 09:24 PM.

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03-30-2008, 05:08 PM	#2
penguin311magic Scooby Newbie Member#: 172953 Join Date: Feb 2008 Chapter/Region: RMIC Location: Colorado Vehicle: 2007 Impreza 2.5i Newport blue	go to boxer4racing.com. The Borla headers might work as long as you get the high flow cat and the borla hush catback. But ask them first

03-31-2008, 02:36 AM	#3
PA-Outback2000 Scooby Specialist Member#: 161832 Join Date: Oct 2007 Chapter/Region: Tri-State Location: PA Vehicle: 2000 Outback Limited Black	also from boxer4racing, check stromung. when u add headers, u may throw a CEL. just doing cat and catback won't. i have a random tech cat and stromung exhaust on mine and love it. see what they have for the 2008's though.

03-31-2008, 07:50 PM	#6
penguin311magic Scooby Newbie Member#: 172953 Join Date: Feb 2008 Chapter/Region: RMIC Location: Colorado Vehicle: 2007 Impreza 2.5i Newport blue	Yea, with the newer models, you need to get the HFC for the whole setup to bolt on. I'm scared to do it now, even though I have the cat-back sitting in my room :-(

04-01-2008, 03:59 AM	#7
PA-Outback2000 Scooby Specialist Member#: 161832 Join Date: Oct 2007 Chapter/Region: Tri-State Location: PA Vehicle: 2000 Outback Limited Black	my bad... thought the 8 was a 0. yes the new ones are more strict.

04-04-2008, 07:40 PM	#8
rs2.5-3.0 Scooby Specialist Member#: 52933 Join Date: Jan 2004 Chapter/Region: MWSOC Location: Brunswick, OH Vehicle: 2008 LGCY2.5iSE.5.mt want to do an STi conv ;)	so i'm screwed as far as just bolting up a header and calling it a day. damnit. i know power isn't going to be made but i want the rumble back.

04-05-2008, 05:12 AM	#10
PA-Outback2000 Scooby Specialist Member#: 161832 Join Date: Oct 2007 Chapter/Region: Tri-State Location: PA Vehicle: 2000 Outback Limited Black	headers should work. try borlas. stromung or any other catback should just bolt up. check boxer4racing.com to make sure they still do exhausts for ur year. i think their's were dual-tip mufflers, but can do single tip if u really wanted to.