Welcome to the North American Subaru Impreza Owners Club Saturday April 25, 2015
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Factory 2.5L Turbo Powertrain (EJ Series Factory 2.5L Turbo)

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.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 01-07-2014, 10:52 PM   #1
lowranger
Scooby Specialist
 
Member#: 124370
Join Date: Aug 2006
Chapter/Region: TXIC
Location: coppell TX. College Station
Vehicle:
03 wrx stg 2.34159
Pro tuned by Cobb Tooning

Default

First off, I have been searching and researching for the past few days and done (for the most part) research for the better/best turbo I could cram into the stock location.

My tuner suggests that the 20g XTR is the best bet for my car. But he also suggests that I do my research to make sure that is the turbo that fits my application.
Im also looking into the Dom 1.5 because thats the direction many people have been going lately, but still not neglecting the 20g. I'm not opposed to something similar to the 3071,3076, or any other of the Dom series. Just nothing with more lag.
Im asking because most applications that i have read are dealing with stock internals. I am not stock but im not all out completely built.
SUGGESTIONS!!

2003 hybrid swap
2.5, CP 100MM pistons with port matched heads.
Pauter Rods
COBB 1000CC injectors
255 fuel pump
Light weight pulley
Spearco TMIC (debating on going FMIC)
Stage 2 ACT clutch with LW flywheel
Sti u/p
TurboXS d/p + turbo back exhaust

I am currently tuned by Cobb.

Goal is as close to 400whp as i can. i think 375 whp is more reasonable but I've seen some great numbers closer to 400 on 93 pump. No E85. No meth. I understand i am still on the stock 5 speed. I do not shift hard for that reason and i do not launch the car. Plans for another transmission are down the road.
i may be forgetting something. PLEASE DONT FLAME!

Thanks and Gig'em
* Registered users of the site do not see these ads.

Last edited by lowranger; 01-07-2014 at 11:10 PM.
lowranger is offline   Reply With Quote
Old 01-07-2014, 10:53 PM   #2
lowranger
Scooby Specialist
 
Member#: 124370
Join Date: Aug 2006
Chapter/Region: TXIC
Location: coppell TX. College Station
Vehicle:
03 wrx stg 2.34159
Pro tuned by Cobb Tooning

Default

Annddddd I wasn't sure if this goes here or built motor discussion. I did not see any turbo questions in the first few pages. Move if needed, sorry.
lowranger is offline   Reply With Quote
Old 01-08-2014, 01:06 AM   #3
umscooby
Scooby Specialist
 
Member#: 50902
Join Date: Dec 2003
Chapter/Region: RMIC
Location: The Mountains
Vehicle:
05 STi
White

Default

Full Race up/down pipe with the borg warner 7163. Stock like spool and easily over 400whp on E85/race gas. Step into the future, spend the extra cash and be the envy of us 20g and 3076 guys.

Hands down best stock location turbo out right now.
umscooby is offline   Reply With Quote
Old 01-08-2014, 08:50 AM   #4
dstroy
Scooby Specialist
 
Member#: 283711
Join Date: May 2011
Chapter/Region: NESIC
Location: Newport
Vehicle:
2012 STI sedan
Black with scratches

Default

Quote:
Originally Posted by umscooby View Post
Full Race up/down pipe with the borg warner 7163. Stock like spool and easily over 400whp on E85/race gas. Step into the future, spend the extra cash and be the envy of us 20g and 3076 guys. Hands down best stock location turbo out right now.
$5000 later after you buy the turbo. Most ridiculously overpriced up/dp ever. And the turbos don't have investment cast housings anymore. More worth it to go rotated at that price point unless class regulations require you to have a stock location turbo.
dstroy is offline   Reply With Quote
Old 01-08-2014, 08:55 AM   #5
umscooby
Scooby Specialist
 
Member#: 50902
Join Date: Dec 2003
Chapter/Region: RMIC
Location: The Mountains
Vehicle:
05 STi
White

Default

5k? way to over exaggerate the price. this is one of the guys i mentioned who will be drooling over your superior setup
umscooby is offline   Reply With Quote
Old 01-08-2014, 09:47 AM   #6
lowranger
Scooby Specialist
 
Member#: 124370
Join Date: Aug 2006
Chapter/Region: TXIC
Location: coppell TX. College Station
Vehicle:
03 wrx stg 2.34159
Pro tuned by Cobb Tooning

Default

I would just got rotated then. But still no e85.
Most turbos will put me over 400 if I had e85.
lowranger is offline   Reply With Quote
Old 01-08-2014, 10:01 AM   #7
dstroy
Scooby Specialist
 
Member#: 283711
Join Date: May 2011
Chapter/Region: NESIC
Location: Newport
Vehicle:
2012 STI sedan
Black with scratches

Default

Quote:
Originally Posted by umscooby View Post
5k? way to over exaggerate the price. this is one of the guys i mentioned who will be drooling over your superior setup
It's $4500 if you get everything coated and buy injectors. Without install labor. So no, I didn't exaggerate the price. And I would never drool over any stock location turbo unless it's a wormhole generator.
dstroy is offline   Reply With Quote
Old 01-08-2014, 10:16 AM   #8
BroBroBroBroBro
Scooby Newbie
 
Member#: 338211
Join Date: Nov 2012
Chapter/Region: E. Canada
Location: Pemeal Bacon
Vehicle:
2011 wrx
12.9 @ 107

Default

if i had the money i would get the EFR 6258 even....just to experience that would be amazing.
BroBroBroBroBro is offline   Reply With Quote
Old 01-08-2014, 11:28 AM   #9
2Fast4U1DAY
Scooby Specialist
 
Member#: 250152
Join Date: Jun 2010
Chapter/Region: MAIC
Location: Pennsylvania
Vehicle:
2006 WRX Limited
OBP

Default

Quote:
Originally Posted by BroBroBroBroBro View Post
if i had the money i would get the EFR 6258 even....just to experience that would be amazing.
Yimi Sport made 432whp 464wtq on the 6258 on E85...
2Fast4U1DAY is offline   Reply With Quote
Old 01-08-2014, 11:48 AM   #10
Leafy
Scooby Specialist
 
Member#: 330625
Join Date: Aug 2012
Chapter/Region: NESIC
Location: MA
Vehicle:
2006 WRX
WRB

Default

You should be able to do 400 on 93 with even the 6758, the 7163 should be near or over 450 on 93 safely, depending on compression ratio.

And yes, IMO the full race setup is mega overpriced. The downpipe is easier to make than the stock one (because its all round tubing), and the up pipe is no more difficult and even uses an easier/cheaper to source turbo flange. Even making the up pipe out of 321 stainless (like I would ****ing hope they do for that kind of money), and competent DIY fabricator with a tig welder could make these kits in their garage and sell them for $800-$1000 and make money hand over fist with each one.
Leafy is offline   Reply With Quote
Old 01-08-2014, 12:05 PM   #11
brooksumw89
Scooby Newbie
 
Member#: 319266
Join Date: May 2012
Chapter/Region: MAIC
Location: Virginia
Vehicle:
2013 WRX
CBS

Default

Since you are still on the stock 5 speed the dom 1.5 would probably be the best bet. It may still make the trans go (obviously sooner rather then if kept stock turbo). If 375 whp is more then reasonable that gets my vote. check out the ppb section, lots of dyno plots to show it is a very capable turbo.
brooksumw89 is offline   Reply With Quote
Old 01-08-2014, 12:15 PM   #12
lowranger
Scooby Specialist
 
Member#: 124370
Join Date: Aug 2006
Chapter/Region: TXIC
Location: coppell TX. College Station
Vehicle:
03 wrx stg 2.34159
Pro tuned by Cobb Tooning

Default

If I was going to replace up and dp, I would just say screw it and go rotated. Would be worth it.
That's where I got my info with the Dom 1.5 is in the proven power. I'm just seeing what people think with better internals.
Hell, may just go rotated for end all be all
lowranger is offline   Reply With Quote
Old 01-08-2014, 01:40 PM   #13
brooksumw89
Scooby Newbie
 
Member#: 319266
Join Date: May 2012
Chapter/Region: MAIC
Location: Virginia
Vehicle:
2013 WRX
CBS

Default

I see that now, I guess I glanced over the up/dp replacement. If going that route then rotated wouldn't cost much more then you had planned so why not?
brooksumw89 is offline   Reply With Quote
Old 01-08-2014, 02:17 PM   #14
lowranger
Scooby Specialist
 
Member#: 124370
Join Date: Aug 2006
Chapter/Region: TXIC
Location: coppell TX. College Station
Vehicle:
03 wrx stg 2.34159
Pro tuned by Cobb Tooning

Default

Well for less then a rotated seyup, I could have my car on the street and tuned with say the 20g. Rotated is anywhere between 3400 and 4200 depending on where you buy the kit and what you get. Plus having to buy new exhaust and go fmic (which I should do anyways). So it will be a few thousand more.
lowranger is offline   Reply With Quote
Old 01-08-2014, 03:54 PM   #15
northman
Scooby Newbie
 
Member#: 163631
Join Date: Nov 2007
Chapter/Region: NWIC
Location: Seattle
Vehicle:
07 Forester XT
Dom 1.5XT-R

Default

Dom1.5 is a great turbo, but it is not really a 400 whp turbo, on pump gas. I'm guessing Cobb in Texas or SoCal will tune similarly to Cobb in Oregon, which should be a fantastic tune but not overly aggressive. I'm tuned at Cobb Surgeline with a Dom1.5 and make about 350 whp. Look at their Dyno Database, cars making closer to 400 tend to use E85, or run bigger turbos, or have cams and headwork.

If you want closer to 400 maybe look at the Dom3 or 3.5.
northman is offline   Reply With Quote
Old 01-08-2014, 04:23 PM   #16
subaru05sti
Scooby Newbie
 
Member#: 214700
Join Date: Jun 2009
Chapter/Region: Tri-State
Location: westchester
Vehicle:
05 subaru STi
black on gold

Default

These cars come with turbos?
subaru05sti is offline   Reply With Quote
Old 01-08-2014, 06:40 PM   #17
lowranger
Scooby Specialist
 
Member#: 124370
Join Date: Aug 2006
Chapter/Region: TXIC
Location: coppell TX. College Station
Vehicle:
03 wrx stg 2.34159
Pro tuned by Cobb Tooning

Default

yeah i got the one that runs off T-rex bones
lowranger is offline   Reply With Quote
Old 01-08-2014, 06:43 PM   #18
lowranger
Scooby Specialist
 
Member#: 124370
Join Date: Aug 2006
Chapter/Region: TXIC
Location: coppell TX. College Station
Vehicle:
03 wrx stg 2.34159
Pro tuned by Cobb Tooning

Default

Quote:
Originally Posted by northman View Post
Dom1.5 is a great turbo, but it is not really a 400 whp turbo, on pump gas. I'm guessing Cobb in Texas or SoCal will tune similarly to Cobb in Oregon, which should be a fantastic tune but not overly aggressive. I'm tuned at Cobb Surgeline with a Dom1.5 and make about 350 whp. Look at their Dyno Database, cars making closer to 400 tend to use E85, or run bigger turbos, or have cams and headwork.

If you want closer to 400 maybe look at the Dom3 or 3.5.

and this is the type of answer im looking for. thank you
and yes, i am tuned by Cobb in texas
lowranger is offline   Reply With Quote
Old 01-09-2014, 12:07 AM   #19
mod maniac
Scooby Specialist
 
Member#: 300551
Join Date: Nov 2011
Chapter/Region: SCIC
Location: mariposa ca.
Vehicle:
2&4 fxt & fxt sti
Fullers Garage

Default

I run a 20g on my hybrid and it does 370whp on 91 and 398whp on meth. Hope that helps.
mod maniac is offline   Reply With Quote
Old 01-09-2014, 10:07 AM   #20
lowranger
Scooby Specialist
 
Member#: 124370
Join Date: Aug 2006
Chapter/Region: TXIC
Location: coppell TX. College Station
Vehicle:
03 wrx stg 2.34159
Pro tuned by Cobb Tooning

Default

That does since I have a hybrid. Thank yoh
lowranger is offline   Reply With Quote
Old 01-09-2014, 03:46 PM   #21
lowranger
Scooby Specialist
 
Member#: 124370
Join Date: Aug 2006
Chapter/Region: TXIC
Location: coppell TX. College Station
Vehicle:
03 wrx stg 2.34159
Pro tuned by Cobb Tooning

Default

Anyone running the Dom 2.5 or dom 3.0? Seem to be putting down some good numbers.
lowranger is offline   Reply With Quote
Old 01-09-2014, 04:57 PM   #22
brooksumw89
Scooby Newbie
 
Member#: 319266
Join Date: May 2012
Chapter/Region: MAIC
Location: Virginia
Vehicle:
2013 WRX
CBS

Default

They do put down good numbers but if you're avoiding lag and trans problems I wouldn't
brooksumw89 is offline   Reply With Quote
Old 01-09-2014, 05:56 PM   #23
lowranger
Scooby Specialist
 
Member#: 124370
Join Date: Aug 2006
Chapter/Region: TXIC
Location: coppell TX. College Station
Vehicle:
03 wrx stg 2.34159
Pro tuned by Cobb Tooning

Default

From some of the dyno pulls I've seen, it's not terrible. I plan on putting a 6 speed in my car anyways.
lowranger is offline   Reply With Quote
Old 01-09-2014, 11:27 PM   #24
mod maniac
Scooby Specialist
 
Member#: 300551
Join Date: Nov 2011
Chapter/Region: SCIC
Location: mariposa ca.
Vehicle:
2&4 fxt & fxt sti
Fullers Garage

Default

I installed the dom 2.5 xtr on my stroker it was fun but my kinugawa 20g put down bigger numbers. Maybe the difference is the stroker and the hybrid.
mod maniac is offline   Reply With Quote
Old 01-14-2014, 07:58 PM   #25
Cloud85
Scooby Newbie
 
Member#: 378557
Join Date: Jan 2014
Default

Does FP make anything that could help you get there? I know they make the Black, Red, and Green for the Evos.
Cloud85 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


All times are GMT -4. The time now is 07:48 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2015 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.