Welcome to the North American Subaru Impreza Owners Club Friday March 29, 2024
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
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.







* 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 06-13-2008, 08:59 PM   #1
04 Slo Sti
Scooby Specialist
 
Member#: 156478
Join Date: Aug 2007
Chapter/Region: MWSOC
Location: indiana
Vehicle:
06 330i
Blue

Default couple Q's on a turbo set-up DOM 3

i've chosen the turbo i'm going to go with

i'm going with the dom 3

what i'm wondering is...what else is nessecary to compliment this turbo...

i know injectors...but sizing...?

i want to be safe but have room to work with on these injectors...

do i need a new inlet or will the stocker hold?

do i need a bigger maf or will i be fine with my SPT intake...

do i need an aftermarket boost controller?

if someone can ethier link to me a list or give me some guidance i'd be more then happy

Thanks for your help guys...i wanna get this rolling...
* Registered users of the site do not see these ads.
04 Slo Sti is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 06-13-2008, 10:02 PM   #2
dexterous
Scooby Guru
 
Member#: 23553
Join Date: Aug 2002
Chapter/Region: MAIC
Location: Grove City, PA
Vehicle:
2005 STI - Insanity!
2014 WRX - Daily

Default

At minimum, you will need the following:

3" Turbo back exhaust (catless or high flow catted)
740cc+ injectors (I used the DW 860cc injectors)
A high flow fuel pump (Walbro 255lph here)
A turbo inlet (I suggest the Perrin)
A big MAF intake (Perrin, COBB 70MM, APS 70MM CAI, etc)
A boost control solenoid like the Perrin or GM (I went with an AVC-R)
A large top mount IC (I went with a large APS Front Mount)

I would also HIGHLY suggest the following:

A new clutch
TGV Deletes
Fuel Rails
An EWG Setup
dexterous is offline   Reply With Quote
Old 06-13-2008, 10:08 PM   #3
wuuusaa
Scooby Guru
 
Member#: 92894
Join Date: Aug 2005
Chapter/Region: BAIC
Location: nomo splitting lanes LOL
Vehicle:
2015 Wrx - fury kit
silver duh

Default

Gimmick turbo inlet ftw, also cheaper then the Perrin.
wuuusaa is offline   Reply With Quote
Old 06-13-2008, 10:16 PM   #4
phuhs04
*** Banned ***
 
Member#: 161270
Join Date: Oct 2007
Vehicle:
2007 STI
BLACK

Default

im using a gimmick inlet on my dom3 with an spt intake but as far as the rest pm me and ill send u the list
phuhs04 is offline   Reply With Quote
Old 06-13-2008, 10:27 PM   #5
jutes85
Scooby Specialist
 
Member#: 127232
Join Date: Sep 2006
Chapter/Region: W. Canada
Location: Saskachatoon
Vehicle:
2017 Mullet SS1LE

Default

Fuel rails and an EWG is not needed, unless you will be pushing past 23psi, which is bad for the stock motor anyways.
jutes85 is offline   Reply With Quote
Old 06-13-2008, 10:31 PM   #6
jazmak24
Scooby Specialist
 
Member#: 171920
Join Date: Feb 2008
Chapter/Region: SCIC
Location: chino, cali
Vehicle:
06 sti
aspen white

Default

it also depends on what you want out of the car.do you good pedal response?or are you just looking to get the most power out of the dom3?
jazmak24 is offline   Reply With Quote
Old 06-13-2008, 10:34 PM   #7
jazmak24
Scooby Specialist
 
Member#: 171920
Join Date: Feb 2008
Chapter/Region: SCIC
Location: chino, cali
Vehicle:
06 sti
aspen white

Default

Quote:
Originally Posted by jutes85 View Post
Fuel rails and an EWG is not needed, unless you will be pushing past 23psi, which is bad for the stock motor anyways.
+1 i agree. neither are needed on stock internals.
jazmak24 is offline   Reply With Quote
Old 06-13-2008, 10:35 PM   #8
phuhs04
*** Banned ***
 
Member#: 161270
Join Date: Oct 2007
Vehicle:
2007 STI
BLACK

Default

^^^^^whole heartedly agree as well
phuhs04 is offline   Reply With Quote
Old 06-13-2008, 10:42 PM   #9
jazmak24
Scooby Specialist
 
Member#: 171920
Join Date: Feb 2008
Chapter/Region: SCIC
Location: chino, cali
Vehicle:
06 sti
aspen white

Default

phuh,let me see the list..your mods
jazmak24 is offline   Reply With Quote
Old 06-13-2008, 10:51 PM   #10
phuhs04
*** Banned ***
 
Member#: 161270
Join Date: Oct 2007
Vehicle:
2007 STI
BLACK

Default hey

lol ya power or EVERYTHING
phuhs04 is offline   Reply With Quote
Old 06-13-2008, 11:01 PM   #11
jazmak24
Scooby Specialist
 
Member#: 171920
Join Date: Feb 2008
Chapter/Region: SCIC
Location: chino, cali
Vehicle:
06 sti
aspen white

Default

power only please
jazmak24 is offline   Reply With Quote
Old 06-13-2008, 11:05 PM   #12
phuhs04
*** Banned ***
 
Member#: 161270
Join Date: Oct 2007
Vehicle:
2007 STI
BLACK

Default

ahh **** it ive spent enough money on parts and enough time and sweat to post it ALL lol!
phuhs04 is offline   Reply With Quote
Old 06-13-2008, 11:05 PM   #13
phuhs04
*** Banned ***
 
Member#: 161270
Join Date: Oct 2007
Vehicle:
2007 STI
BLACK

Default

Accessport V2 w/ Protune
Spt Short Ram Intake
Spt Heat Shield- Insulated
modified air duct
Snorkel Delete
Ram Air Dryer Tubing
Gimmick Turbo Inlet
Blouch Dominator 3.0R
Invidia G200 TBE- down pipe heat wrapped
Perrin Signature Series FMIC
AEM Meth injection
Perrin Radiator Shroud
Redline Water Wetter
Sti V-Front lip Spoiler
Apexi Ground Stabilizer
2 Greddy Catch Cans
Ebay Front and Rear strut bars- FTW!!
Perrin 25mm Front sway w/ Endlinks
Perrin 25mm Rear sway w/ Endlinks
Tein H-Tech Springs
Perrin Rear Stabilizer Kit
Perrin Shifter Bushings
Perrin lightened crank pulley
Gt spec Front Ladder bar
Apexi Turbo Timer
Subaru Underseat subwoofer
Sti Titanium Shift Knob
Uncle Scotty's Transmission Fluid Cocktail
20% Tint all around
Deautchwerks 860cc Injectors
Walbro 255lph fuel pump
Grimmspeed coated TGV delete
Grimmspeed PnP Coated Exhaust manifold w/ high flow crossover
Greddy Profec B Boost Controller
Wiseco Forged Pistons
Head Studs/ Gaskets
8mm Phenolic Spacers
Turbo Heat Shield
Grimmspeed PnP Coated Uppipe
Defi boost guage
KSTech scoop delete
phuhs04 is offline   Reply With Quote
Old 06-13-2008, 11:07 PM   #14
phuhs04
*** Banned ***
 
Member#: 161270
Join Date: Oct 2007
Vehicle:
2007 STI
BLACK

Default

oh and ACT Hd street clutch
and ACT streetlite flywheel
phuhs04 is offline   Reply With Quote
Old 06-13-2008, 11:15 PM   #15
jazmak24
Scooby Specialist
 
Member#: 171920
Join Date: Feb 2008
Chapter/Region: SCIC
Location: chino, cali
Vehicle:
06 sti
aspen white

Default

just a couple of Qs.
any trouble with the perrin pulley? curious,because i was told that maybe with big power,it could sometimes cause car to stall after fast accelleration,and then decelleration.
why the boost controller?
other than that,nice list
jazmak24 is offline   Reply With Quote
Old 06-13-2008, 11:25 PM   #16
phuhs04
*** Banned ***
 
Member#: 161270
Join Date: Oct 2007
Vehicle:
2007 STI
BLACK

Default

BC because stock boost controller really sucks (i think they changed it so your 06 i believe has the one from previous years which is ok) the problem is on other years you can spike your boost at low rpm and then ride it out on the 07 you have to wait for it to come- might want to ask someone who REALLY knows how to tune the 07's because every tuner will tell u they can but they can explain it better as i am just passing on what i remember from conversations
phuhs04 is offline   Reply With Quote
Old 06-13-2008, 11:30 PM   #17
phuhs04
*** Banned ***
 
Member#: 161270
Join Date: Oct 2007
Vehicle:
2007 STI
BLACK

Default

and the light weight crank- you can tune your map to work with the lighter pulley and also increase idle which will keep this from happening but yea before when i first put it on every so often for the 3 or so weeks i had it b4 tune it would stall if i floored it to redline and put it straight into neutral (same thing will happen with light weight flywheel as these are the only 2 external weights on the crank so whichever you lighten or both have the same effect) but i love the benefits it accelerates and decellerates throught the rpms much quick (less rotational mass/inertia) and because it drops the rpms quicker you can get quicker smoother shifts IMO
phuhs04 is offline   Reply With Quote
Old 06-13-2008, 11:30 PM   #18
jazmak24
Scooby Specialist
 
Member#: 171920
Join Date: Feb 2008
Chapter/Region: SCIC
Location: chino, cali
Vehicle:
06 sti
aspen white

Default

oh your talking about the boost control solenoid
jazmak24 is offline   Reply With Quote
Old 06-13-2008, 11:45 PM   #19
phuhs04
*** Banned ***
 
Member#: 161270
Join Date: Oct 2007
Vehicle:
2007 STI
BLACK

Default

yes and no
phuhs04 is offline   Reply With Quote
Old 06-14-2008, 02:02 PM   #20
04 Slo Sti
Scooby Specialist
 
Member#: 156478
Join Date: Aug 2007
Chapter/Region: MWSOC
Location: indiana
Vehicle:
06 330i
Blue

Default

Thanks for the responses guys

i have the pump already on my set-up
new clutch is going in on the install day of everything...

put it this way i'm already stage 2...
04 Slo Sti is offline   Reply With Quote
Old 06-14-2008, 02:44 PM   #21
jutes85
Scooby Specialist
 
Member#: 127232
Join Date: Sep 2006
Chapter/Region: W. Canada
Location: Saskachatoon
Vehicle:
2017 Mullet SS1LE

Default

If you are already on STG2, this is what you need, and what I'd get if I'd go Domtree.

DOM3 (2.4" inlet 8cm2)
DW740cc injectors
Walbro fuel pump
APS top mount or FM (your choice, to hack the bumper or not)
APS Inlet
APS 65mm intake
Grimmspeed TGV deletes
Prodrive BCS
jutes85 is offline   Reply With Quote
Old 06-14-2008, 06:07 PM   #22
NSFW
Scooby Guru
 
Member#: 140444
Join Date: Feb 2007
Chapter/Region: NWIC
Location: Near Seattle, WA
Vehicle:
05 Stage Free LGT
ATP 3076, 6MT, AVO FMIC

Default

Question for people running 740cc injectors with a Dom3 or other 3076-based turbo:

What are your peak IDCs?

Thanks!
NSFW is offline   Reply With Quote
Old 06-14-2008, 08:20 PM   #23
phuhs04
*** Banned ***
 
Member#: 161270
Join Date: Oct 2007
Vehicle:
2007 STI
BLACK

Default

good question i would think pretty high bigger inj might be better
phuhs04 is offline   Reply With Quote
Old 06-14-2008, 08:41 PM   #24
jazmak24
Scooby Specialist
 
Member#: 171920
Join Date: Feb 2008
Chapter/Region: SCIC
Location: chino, cali
Vehicle:
06 sti
aspen white

Default

for 2.4 inlet,and tmic=740-750cc
3" ,andfmic=850-860cc
jazmak24 is offline   Reply With Quote
Old 06-14-2008, 08:48 PM   #25
jazmak24
Scooby Specialist
 
Member#: 171920
Join Date: Feb 2008
Chapter/Region: SCIC
Location: chino, cali
Vehicle:
06 sti
aspen white

Default

ive been talking to a tuner,and this wrx wagon is stock inlet,tmic with atp gt 30r and they told me 740-750 cc would be perfect.850 are a little too much.but this guy still had alot of stock parts though.
jazmak24 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
Dyno Tune: IAG makes 409whp on 2.5L + Prototype Blouch DOM 3.0 XT-R IAG Performance Proven Power Bragging 155 07-13-2011 07:06 PM
Selling Dom 4R Turbo set-up STiSteve Engine/Power/Exhaust 2 08-03-2009 03:32 AM
WRX turbo set up on 2002 impreza fasta$$wagon Normally Aspirated with bolt-on Forced Induction Powertrain 8 02-11-2009 01:41 AM
2002wrx turbo set up on 2001 2.5 rs witte1919 Normally Aspirated with bolt-on Forced Induction Powertrain 9 03-13-2008 06:06 AM
need stock 04 and up wrx turbo set up impr3vize Private 'Wanted' Classifieds 0 07-14-2005 02:58 PM

All times are GMT -4. The time now is 04:25 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2024 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.

When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission
Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.