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View Full Version : OBX Equal Length header fitment ?????



auspex
05-15-2007, 12:58 AM
i was checking out these OBX headers (http://cgi.ebay.com/ebaymotors/OBX-Exhaust-Header-98-05-Subaru-Impreza-2-5RS-2-5L-RS_W0QQcmdZViewItemQQcategoryZ33631QQihZ007QQitemZ170110232302QQrdZ1QQsspagenameZWDVW) and i've got a couple issues.

1. I don't get how these headers are going to connect to my midpipe with the end going straigh back like that. With the UEL's, I can see how they attach with the curved end. But with these EL headers will I have to re-route my exhaust to meet this?

2. What's the other piece pictured?

thanks!

mike

Chicago96GT
05-15-2007, 03:37 AM
Not Sure but prob have to redo part of ur exhuast. that other peice im pretty sure is something with the cat built in and also that looks like some nice headers..know if theyed fit on a legacy 2.5 96 sedan?

rougeben83
05-15-2007, 03:40 AM
i was checking out these OBX headers (http://cgi.ebay.com/ebaymotors/OBX-Exhaust-Header-98-05-Subaru-Impreza-2-5RS-2-5L-RS_W0QQcmdZViewItemQQcategoryZ33631QQihZ007QQitemZ170110232302QQrdZ1QQsspagenameZWDVW) and i've got a couple issues.

1. I don't get how these headers are going to connect to my midpipe with the end going straigh back like that. With the UEL's, I can see how they attach with the curved end. But with these EL headers will I have to re-route my exhaust to meet this?

2. What's the other piece pictured?

thanks!

mike

OBX headers eliminates your cats completely. It has a separate little resonator section that goes in between the header and your catback exhaust.

You can have a muffler shop weld in a hi-flo cat in place of the resonator.

Chicago96GT
05-15-2007, 03:59 AM
Sorry to ask again but would those fit on the 2.5gt 96 legacy sedan.

pdawg
05-15-2007, 08:44 AM
Those look like my Cobb EL's. Are you sure that is not a Cat? awfully cheap if it is.

Huffer
05-15-2007, 09:03 AM
Sorry to ask again but would those fit on the 2.5gt 96 legacy sedan.

Yes.

Huffer
05-15-2007, 09:05 AM
Those look like my Cobb EL's. Are you sure that is not a Cat? awfully cheap if it is.

it's not a cat.

auspex
05-15-2007, 11:29 AM
thanks for all the replies...i'm going to have to ask my exhaust guy about charges to get that installed.

ben, you're quite the proponent to using the EL's over the UEL's....do you know anything about NOT using that resonator piece? ie, keeping my current HF high spun cat and resonator, but moving them a tad to fit to these headers?

thanks for theinput.

mike

Huffer
05-15-2007, 12:15 PM
thanks for all the replies...i'm going to have to ask my exhaust guy about charges to get that installed.

ben, you're quite the proponent to using the EL's over the UEL's....do you know anything about NOT using that resonator piece? ie, keeping my current HF high spun cat and resonator, but moving them a tad to fit to these headers?

thanks for theinput.

mike

The header will mate up to your existing cat section. It's designed to have an OEM fit.

auspex
05-15-2007, 03:10 PM
thanks, mate.

mike

Chicago96GT
05-15-2007, 03:47 PM
Ok so if i got these i would still need a high flow cat or hoock it up to stock cat?

Huffer
05-15-2007, 05:15 PM
The header will mate up to your existing cat section. It's designed to have an OEM fit.

rougeben83
05-15-2007, 05:15 PM
thanks for all the replies...i'm going to have to ask my exhaust guy about charges to get that installed.

ben, you're quite the proponent to using the EL's over the UEL's....do you know anything about NOT using that resonator piece? ie, keeping my current HF high spun cat and resonator, but moving them a tad to fit to these headers?

thanks for theinput.

mike

The resonator piece is just there to do lower the exhaust tone and don't make it rasp above a certain RPM. TBH, that resonator on that little section is kind of small to do any significant difference; I would just replace it with a high-flo cat. You could of course run it as it is, but that isn't a viable option if you have smog inspection in your area. Also, to be honest, adding a modern cat to an exhaust isn't as restrictive as some people make them out to be. I sleep a little better at night knowing that I'm having performance along with a semi-environmentally friendly car :lol:

You can always add a bigger resonator down stream in the catback section. I'm running something like a 20" resonator on mine.

I'm a proponent of the EL's because they make more power. Simple as that. I know a lot of people argue about loosing the "boxer rumble" but honestly, that's just a byproduct of bad header design; you don't hear any Porsche 911, or any other boxer style engine sound like that ;). Now that's a personal choice, and I had the Borla style headers on my car and it just sounded like my car was farting after a while. And the car loosing steam past 4.5k-5k just wasn't worth the exhaust note, especially after I got my EL headers for such a great deal.

And yes, they'll fit any BD, BE as long as you keep your stock exhaust mounting locations. :lol:

Chicago96GT
05-15-2007, 07:00 PM
if i did get these is there going to be any isues withe sensors or would i need to get them rewired or what....Also nice fine auspex

pdawg
05-15-2007, 09:38 PM
The header will mate up to your existing cat section. It's designed to have an OEM fit.

Are you sure this will mate with the existing cat. I haven't looked at my oem cat in a while but I thought it had bend in the pipe?

Reason
05-16-2007, 05:48 AM
No the header resonator setup eliminates the 2 cats. It bolts straight to your midpipe.

Plays_with_Toys
05-16-2007, 01:04 PM
if i did get these is there going to be any isues withe sensors or would i need to get them rewired or what....Also nice fine auspex

Alot of people complain about a check engine light. You can install an O2 sensor spacer and that sometimes helps but it's kind of hit or miss how the car takes the header.

Chicago96GT
05-16-2007, 02:35 PM
if i do get a check engine light is there going to be anything rong with the car/ecu exept the light?

rougeben83
05-16-2007, 04:01 PM
if i do get a check engine light is there going to be anything rong with the car/ecu exept the light?

No, you'll just be polluting more :D

But seriously, if you don't get the CEL fixed after the header, you may miss any other problems down the line that may cause the CEL to come on too. (since it's already on from the header).

The spacer trick only works when you have some sort of cat in there already. It doesn't really work if it's just a straight pipe. There's an electronic version that you wire into the 02 sensor wires to eliminate the CEL completely.

Sarra
05-16-2007, 07:00 PM
Stock exhaust goes like this (on a 1998 GT Wagon, anyway):

Headers, Cat, Cat, midpipe - resonator - midpipe, muffler, tip. The resonator is part of the mid pipe.

With OBX headers, you would have: Headers, resonator, midpipe - resonator - midpipe, muffler, tip. So, yes, buy them, and have an exhaust shop pull your OEM cat, weld it in where the resonator (on the OBX headers is located, as has been said, what, 4 times now?), and have them install it. Or, if you really want performance, spend $3k and get a block to tip exhaust from TWE. Which, incidentally, is the way I'm going to go with my Supercharger (2.5" > 2.25").

Reason
05-16-2007, 09:58 PM
No the header resonator setup eliminates the 2 cats. It bolts straight to your midpipe.

Is this complicated? Should I draw a picture?

Huffer
05-17-2007, 08:58 AM
Maybe you should... people are not getting it.

rougeben83
05-17-2007, 01:12 PM
Maybe you should... people are not getting it.

====\-- /=(cat)=(cat)=\ -- --- - -- --- /===(Muffler()=o
-- - - \ /-- - - ----- --- \==========/
=====/

Header---->cat section------>midpipe------>axleback

======\
--- -- - >==(resonator)=\ - -- - - - - - - /===(Muffler()=o *brruuuum
======/ - - - - - - - - --\==========/

OBX hd-->resonator section-->midpipe------>axleback

:grin: :grin: :grin: :grin: :grin:

Reason
05-17-2007, 04:25 PM
Maybe you should... people are not getting it.

====\-- /=(cat)=(cat)=\ -- --- - ----- /===(Muffler()=o
-- - - \ /-- - - ----- --- \==========/
=====/

Header---->cat section------>midpipe------>axleback

======\
--- -- - >==(resonator)=\ - - - - - - - - /===(Muffler()=o *brruuuum
======/ - - - - - - - - --\==========/

OBX hd-->resonator section-->midpipe------>axleback

:grin: :grin: :grin: :grin: :grin:

What the hell is that?? :lol:

tekkitan
05-17-2007, 09:14 PM
this thread is hilarious.

thinking about selling my borla now and getting some OBX EL's now :)

rougeben83
05-18-2007, 01:42 AM
All right, fine, no one appreciates my mad tyte ASCII skillz :roll: :grin:

Apparently OBX headers fit the older legacies too:

https://sl-i.net/FORUM/images/imported/2006/08/kcmo2004004-1.jpg

auspex
05-18-2007, 08:24 AM
all right, let's not bash anyone about 'not getting it'.

i had questions because i already have an entire header back system and i'm wondering how much i'd have to chop. i' don't have any OEM cats and I've already got a big bazooka lookin' resonator on there.

plus, these things aren't cheap and people want to be confident about their purchases.

lol, now i'm bidding on wheels and a front sway, so it looks like these are going on the back burners anyway.

mike