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06-13-2013, 11:50 AM | #1 |
Scooby Newbie
Member#: 319145
Join Date: May 2012
Chapter/Region:
Tri-State
Location: Bethlehem, Pennsylvania
Vehicle:2001 Legacy Wintergreen |
UEL Headers and Exhaust System
I want to get UEL headers but im not sure if I want to go with the headers or if I should leave my stock header and put a muffler on. I want to do both but unfortunately one has to come before the other. Should I do UEL headers and a stock muffler? (will it have a low throaty sound?) //OR// Should I do a muffler and leave my stock header on? If so what muffler should I go with? What did you guys do.
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06-13-2013, 12:04 PM | #2 |
Scooby Specialist
Member#: 161832
Join Date: Oct 2007
Chapter/Region:
Tri-State
Location: PA
Vehicle:2000 Outback Limited Black |
Where in PA are you from?
I would do the catback 1st for the sound, as that's what I did for mine. I have a stromung catback and love it! I would definitely recommend one. Try boxer4racing.com to see if they can get one for you. I also have the Borla header. THat added low-end torque and really pronounced the boxer rumble. |
06-13-2013, 02:08 PM | #3 |
Scooby Newbie
Member#: 319145
Join Date: May 2012
Chapter/Region:
Tri-State
Location: Bethlehem, Pennsylvania
Vehicle:2001 Legacy Wintergreen |
Okay thanks alot, I'm from the Lehigh Valley area in pa. I have big plans for my subie, just got the momo steering wheel on just the other day.
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06-13-2013, 02:52 PM | #4 |
Scooby Specialist
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MWSOC
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06-13-2013, 03:52 PM | #5 |
Scooby Newbie
Member#: 250265
Join Date: Jun 2010
Chapter/Region:
RMIC
Location: Denver, CO
Vehicle:2005 Legacy GT White |
I was under the impression that UEL headers would not add any low end torque, but rather would shift the torque band higher, and add a bit of top end power. Also, doesn't the '01 legacy have UEL from the factory, so getting the rumble should just require a muffler. Larger diameter primaries are all that you will get with new UEL headers, which will increase the noise your exhaust makes and increase top end hp.
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06-13-2013, 04:06 PM | #6 |
Scooby Newbie
Member#: 319145
Join Date: May 2012
Chapter/Region:
Tri-State
Location: Bethlehem, Pennsylvania
Vehicle:2001 Legacy Wintergreen |
How could I tell id my 01' Legacy has the uel headers stock? and I was looking at Magnaflow exhaust muffler. They sounded pretty good.
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06-13-2013, 04:15 PM | #7 |
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Look at the exhaust manifolds.
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06-13-2013, 09:01 PM | #8 |
Scooby Newbie
Member#: 319145
Join Date: May 2012
Chapter/Region:
Tri-State
Location: Bethlehem, Pennsylvania
Vehicle:2001 Legacy Wintergreen |
True, mine doesn't look any more special. I think I will go with the muffler first.
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06-14-2013, 08:03 AM | #9 |
Scooby Specialist
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Tri-State
Location: PA
Vehicle:2000 Outback Limited Black |
kenny d... define big plans
saabaholic... you are talking about EL (equal-length) headers, as they move powerband higher in rpms. my dyno graphs show a gain of 18TRQ to the wheels with just the borla header. yes, the stock header is UEL, but a crappy version of one. definitely get the borla header. it's worth the price. dyno... http://xcceleration.com/imp-gallery-...back.25.na.htm |
06-14-2013, 11:13 AM | #10 | |
Scooby Newbie
Member#: 250265
Join Date: Jun 2010
Chapter/Region:
RMIC
Location: Denver, CO
Vehicle:2005 Legacy GT White |
Quote:
However, for UEL folks, they would not get the benefit of the harmonics in the headers, and would not see the same torque boost. They would still see a bit more high RPM HP from the increased exhaust flow. Of course this is all just theory, and only a before/after comparison on a dyno will tell the whole story. Also, any additional mods (like a cat back cams or intake) will change the dynamics of the system. |
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06-14-2013, 12:33 PM | #11 |
Scooby Specialist
Member#: 161832
Join Date: Oct 2007
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Tri-State
Location: PA
Vehicle:2000 Outback Limited Black |
your logic is correct and my dynos show the results.
as for UEL, they gave my a nice low-end torque "surge" around 3000rpm in 2nd gear, which is where it should be/i like it. i can't compare primary sizes since i don't know mine or yours. |
06-14-2013, 12:52 PM | #12 |
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Location: Detroit, MF'er!
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Any headers primaries benefit from pressure wave tuning, just only one or two cylinders at a time unless it's an EL design.
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06-14-2013, 12:53 PM | #13 |
Scooby Newbie
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RMIC
Location: Denver, CO
Vehicle:2005 Legacy GT White |
Sorry to confuse, I meant larger than stock primaries, not larger than yours. I don't know either how the size of the CNT EL header primaries compares with the (i am assuming Borla or Borla Rep) UEL header primaries. I might have to look that up when I am not at work.
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06-14-2013, 02:08 PM | #14 |
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Join Date: Oct 2007
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Location: PA
Vehicle:2000 Outback Limited Black |
there will be a difference between EL and UEL performance, no matter what. but there will also be a difference between using different pipe sizes within each type.
just found this... http://www.borla.com/products/imprez...rt__17183.html that's the header on my car now. |
06-14-2013, 10:40 PM | #15 |
Scooby Newbie
Member#: 319145
Join Date: May 2012
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Location: Bethlehem, Pennsylvania
Vehicle:2001 Legacy Wintergreen |
I found a nice muffler, a lot of guys are using magnaflow exhaust mufflers. For example I found the street series (#14832) muffler. They sound really good on subies and I think would be a neat addition to what I got. Thanks for all the information on the headers.
Mangaflow Muffler: http://www.magnaflow.com/02product/d...rtnumber=14832 Muffler Video: Take a look and let me know what you guys think, even with stock headers it sounds good. |
06-14-2013, 11:37 PM | #16 |
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TXIC
Location: West Texas
Vehicle:2012 WRX Hatchback Dark grey |
I went on ebay and got a catback that has been fantastic. Shipped it cost me $80 and I got Borla UEL right after for $100 from a friend. You dont need an expensive exhaust so just look around =)
My exhaust now it's all ceramic coated so it is all flat black Use headphones and HD for best sound |
06-20-2013, 10:54 PM | #17 |
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Member#: 359930
Join Date: Jun 2013
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for all you guys running headers, especially the Borla UEL, are you running the stock cat? I am running the borla UEL, tsudo HFC, and a 2 1/2" cat back on my rs and am getting codes (P2096 and P0420), as my rear o2 doesn't seem to be happy. What are you all doing to be code free?
I have an '05 2.5 RS. Last edited by 05SubieRS; 06-20-2013 at 11:03 PM. |
06-21-2013, 02:37 AM | #18 | |
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Quote:
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06-21-2013, 08:09 AM | #19 |
Scooby Specialist
Member#: 161832
Join Date: Oct 2007
Chapter/Region:
Tri-State
Location: PA
Vehicle:2000 Outback Limited Black |
try an o2 sensor spacer (spark plug spacers would work), which moves the sensor out of the exhaust a bit.
i was CEL free untill i added the borla header to the mix. i was running stromung catback and random technology high-flow cat before the header. once i got those codes, i put the spacer on and have been CEL free for 3-4 years. |
06-21-2013, 08:24 AM | #20 | |
Scooby Newbie
Member#: 250265
Join Date: Jun 2010
Chapter/Region:
RMIC
Location: Denver, CO
Vehicle:2005 Legacy GT White |
Quote:
http://forums.nasioc.com/forums/show...rear+o2+spacer You can go into the ecu and disable the codes, or simply ignore them. They are cat efficiency codes. |
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06-21-2013, 04:18 PM | #21 |
Scooby Specialist
Member#: 161832
Join Date: Oct 2007
Chapter/Region:
Tri-State
Location: PA
Vehicle:2000 Outback Limited Black |
as my username here implies (PA-Outback2000),my car is a 2000, but thanks for the link.
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06-21-2013, 06:14 PM | #22 |
Scooby Newbie
Member#: 250265
Join Date: Jun 2010
Chapter/Region:
RMIC
Location: Denver, CO
Vehicle:2005 Legacy GT White |
That info was posted in reference to 05SubieRS, who has a '05 Subaru 2.5RS, which has a newer ECU/fueling system that spacers cause problems with. Unfortunately, you did not pick up on this and recommended he use one, and I was correcting this oversight.
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06-21-2013, 08:46 PM | #23 | |
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Quote:
So... Given that... What is someone with an '05 to do? |
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06-21-2013, 10:32 PM | #24 |
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MAIC
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Vehicle:2002 WRX WRB |
Download the open source tuning software on your laptop and buy a cable. Grab your rom and disable your codes. Reflash that rom to your car and done. That's what I did. Not having cruise and the flashing CEL got old pretty quick.
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06-21-2013, 10:42 PM | #25 | |
Scooby Newbie
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Join Date: Jun 2013
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Quote:
Where did I hear that disabling the p2096 was a bad idea? |
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