Welcome to the North American Subaru Impreza Owners Club Tuesday June 28, 2022
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > Normally Aspirated with bolt-on Forced Induction Powertrain

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.







* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 02-22-2012, 03:38 PM   #1
Mikems subie
Scooby Newbie
 
Member#: 304372
Join Date: Dec 2011
Default 2.5i uel headers for n/a

Got a 2.5i want boxer rumble then strut tower bars then lighter nice rims exhaust is first tho could I get a wrx header and up and have a muffler shop mod it for the o2 sensor or is there an easier way
* Registered users of the site do not see these ads.
Mikems subie is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 02-22-2012, 07:34 PM   #2
Tafkars
Scooby Newbie
 
Member#: 305650
Join Date: Jan 2012
Chapter/Region: South East
Location: Zephyrhills, FL
Vehicle:
2016 WRX
Dark Gray Metallic

Default

Quote:
Originally Posted by Mikems subie View Post
Got a 2.5i want boxer rumble then strut tower bars then lighter nice rims exhaust is first tho could I get a wrx header and up and have a muffler shop mod it for the o2 sensor or is there an easier way
I got an UEL Header from Agency Power and the collector on the pipes couldn't be modified. I sold it to a friend who put it on his WRX and it sounds great. He gave me his stock one, I want to do this exactly, and it looks a lot more modifiable than the AP one. I think the o2 bung could be welded in from a shop, but the flange on the end is at an upward angle which needs to be bent down because it runs almost DIRECTLY at part of the frame without much room to spare for an additional adapted pipe. Also, the flange is 3 bolt on ours and 2 bolt on WRX. Might be different for different years, mine is an 08' and I'm sure that the flange isn't a big deal. But let me know if you do it before me and how it works!
Tafkars is offline   Reply With Quote
Old 02-22-2012, 07:37 PM   #3
KartRacer3
Scooby Specialist
 
Member#: 268328
Join Date: Dec 2010
Chapter/Region: BAIC
Location: Norcal
Vehicle:
2011 2.5i prem pckg
SSM

Default

first off, no offense but you should really try and clean up your grammar ;p
second, to my knowledge you can have uel headers but I nor anybody else can help you before you fill out your profile that tells us about what year 2.5i you have. I have heard/seen many 2.5i's with uel headers, however I was unsure of whether they were aftermarket or just wrx headers on a 2.5i. By the way the sound may be nice but you will gain little to no performance gains by switching to uel headers. Hope this helps!
KartRacer3 is offline   Reply With Quote
Old 02-22-2012, 08:34 PM   #4
Tafkars
Scooby Newbie
 
Member#: 305650
Join Date: Jan 2012
Chapter/Region: South East
Location: Zephyrhills, FL
Vehicle:
2016 WRX
Dark Gray Metallic

Default

Quote:
Originally Posted by KartRacer3 View Post
first off, no offense but you should really try and clean up your grammar ;p
second, to my knowledge you can have uel headers but I nor anybody else can help you before you fill out your profile that tells us about what year 2.5i you have. I have heard/seen many 2.5i's with uel headers, however I was unsure of whether they were aftermarket or just wrx headers on a 2.5i. By the way the sound may be nice but you will gain little to no performance gains by switching to uel headers. Hope this helps!

If you don't mind, I'd like to add that it will not sound like a WRX. It is a SOHC Non-Turbo. UEL will help, but won't make it sound like a WRX.
Tafkars is offline   Reply With Quote
Old 02-23-2012, 02:18 PM   #5
GEE-OTTO
Scooby Specialist
 
Member#: 201277
Join Date: Jan 2009
Chapter/Region: MAIC
Location: Northern VA
Vehicle:
2008 08 QSM 5MT LGT
QSM

Default

Quote:
Originally Posted by Tafkars View Post
I got an UEL Header from Agency Power and the collector on the pipes couldn't be modified. I sold it to a friend who put it on his WRX and it sounds great. He gave me his stock one, I want to do this exactly, and it looks a lot more modifiable than the AP one. I think the o2 bung could be welded in from a shop, but the flange on the end is at an upward angle which needs to be bent down because it runs almost DIRECTLY at part of the frame without much room to spare for an additional adapted pipe. Also, the flange is 3 bolt on ours and 2 bolt on WRX. Might be different for different years, mine is an 08' and I'm sure that the flange isn't a big deal. But let me know if you do it before me and how it works!



there you go
GEE-OTTO is offline   Reply With Quote
Old 02-23-2012, 03:43 PM   #6
KartRacer3
Scooby Specialist
 
Member#: 268328
Join Date: Dec 2010
Chapter/Region: BAIC
Location: Norcal
Vehicle:
2011 2.5i prem pckg
SSM

Default

Quote:
Originally Posted by Tafkars View Post
If you don't mind, I'd like to add that it will not sound like a WRX. It is a SOHC Non-Turbo. UEL will help, but won't make it sound like a WRX.
Thank you for reminding me i have a SOHC, i keep thinking its dohc oh well.
you are correct sir!
KartRacer3 is offline   Reply With Quote
Old 02-23-2012, 04:40 PM   #7
Mikems subie
Scooby Newbie
 
Member#: 304372
Join Date: Dec 2011
Default

Thanks for the help its a 06 2.5i I like the sound of the boxer rumble on YouTube they sounded pretty darn nice I realize there is no gain in power that is noticeable but with a better intake and better out flow from the exhaust you might notice a small difference I'm not looking for a ricer sound so I am willing to spend the money on the sound not the power
Mikems subie is offline   Reply With Quote
Old 02-24-2012, 08:02 AM   #8
Mikems subie
Scooby Newbie
 
Member#: 304372
Join Date: Dec 2011
Default

I guess all I want for my car in the long hull is to get another 25hp out of it and have the boxer rumble I was thinking the uel headers and 2.5" back with nice intake and lighter rims with a safe stronger tune over oem and a nice strong and smooth suspension I promise if I do this I'll get a big n/a sticker for the back windshield so people know it's not a wrx or Sti I'd hate to give them a bad name as I know people might assume
Mikems subie is offline   Reply With Quote
Old 02-24-2012, 08:06 AM   #9
Mikems subie
Scooby Newbie
 
Member#: 304372
Join Date: Dec 2011
Default

I heard that our stock intake is just as good meaning we already pull in enough air for 2.5" and that our headers r already 2.5 till cat is that true for the 2.5"
Mikems subie is offline   Reply With Quote
Old 02-24-2012, 11:57 AM   #10
GEE-OTTO
Scooby Specialist
 
Member#: 201277
Join Date: Jan 2009
Chapter/Region: MAIC
Location: Northern VA
Vehicle:
2008 08 QSM 5MT LGT
QSM

Default

25 hp is possible via a good tune and maybe a hybrid intake and one less cat in the mix.
GEE-OTTO is offline   Reply With Quote
Old 03-14-2022, 01:06 AM   #11
Stphnhrrng82
Scooby Newbie
 
Member#: 528702
Join Date: Feb 2022
Default

Quote:
Originally Posted by KartRacer3 View Post
Thank you for reminding me i have a SOHC, i keep thinking its dohc oh well.
you are correct sir!
Aye donít worry man, I have an 09 Impreza N/A SOHC, and itís more reliable. Plus if you port your intake manifolds, your headers, and the intake & exhaust ports on the heads (Iím in the middle of doing that myself) you can just a decent amount of hp gains. Add a lightweight flywheel or crank pulley and it not only is more powerful but a lot peppier. Clean that **** till you can eat pff it, and polish it till you can almost see your reflection and you get good gains. After thatís all done, but a couple cams (only 2 since itís SOHC) and you can get noticeable difference. put a cold air intake on it and donít forget to have it tuned for a nice reliable, fairly powerful and responsive car. Thereís only a few things that I would like about having a boosted DOHC more than what I currently have
Stphnhrrng82 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
2006 2.5i UEL Header setup! CookieO Interior & Exterior Modification 11 09-26-2014 02:11 PM
11 2.5i uel headers install njtank Newbies & FAQs 4 02-26-2011 02:49 PM
08 2.5i UEL Headers Subarudave09 Normally Aspirated Powertrain 10 10-20-2010 06:25 PM
07 2.5i UEL header swap power gain or loss? kaotik78 Normally Aspirated Powertrain 4 02-11-2010 08:39 AM
Finally ordered UEL headers for my 2.5i! ZeppelinPie792 Normally Aspirated Powertrain 170 03-11-2008 06:05 PM

All times are GMT -4. The time now is 03:04 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2022, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2022 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.