Welcome to the North American Subaru Impreza Owners Club Wednesday October 22, 2014
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 11-10-2012, 03:19 PM   #1
Bugeye386
Scooby Newbie
 
Member#: 162975
Join Date: Oct 2007
Default Stage 3 06 wrx tr looking for a bit more.

Hi guys, I've been searching around a bit on options for some more power for my wrx. Current mods:
Catless dp and spt cat back
Gm boost solenoid
Sti top mount intercooler
VF39
Open source tune similar to xpt tuning stage 3 map

I'm not sure how much power I'm making right now but I would guess in the neighborhood of 275 whp probably? Looking to make a bump in power and still keep things relatively safe. I know the tranny is at risk already, and I know adding any power makes things less reliable. Just looking for something that can be tuned conservatively and still make good power somewhere in the 325 hp range. Was considering:
18g or 20g. Let me know what support you think these need.
Vf43?
Adding meth, haven't researched much so any info helps.
Going to xpt stage 3 race which adds cai and fuel pump and retune.
Any combo of more minor mods and a good protune.

Any suggestions welcome. This is a daily driver and will be used for fun on the street, very little track time.
Thanks
* Registered users of the site do not see these ads.
Bugeye386 is online now   Reply With Quote
Old 11-10-2012, 03:46 PM   #2
04ScoobyWtf
Scooby Specialist
 
Member#: 287974
Join Date: Jul 2011
Default

18g 750cc injectors Wally and pro-tune no need for an intake.
04ScoobyWtf is offline   Reply With Quote
Old 11-10-2012, 08:38 PM   #3
Bugeye386
Scooby Newbie
 
Member#: 162975
Join Date: Oct 2007
Default

Which 18g? Td05 8cm^2
Bugeye386 is online now   Reply With Quote
Old 11-10-2012, 08:44 PM   #4
wrxlaunch
Scooby Specialist
 
Member#: 181298
Join Date: May 2008
Chapter/Region: MAIC
Location: MD
Vehicle:
99 SF

Default

Quote:
Originally Posted by Bugeye386
Which 18g? Td05 8cm^2
That's a nasty turbo for the 2.5
wrxlaunch is offline   Reply With Quote
Old 11-10-2012, 08:47 PM   #5
Bugeye386
Scooby Newbie
 
Member#: 162975
Join Date: Oct 2007
Default

Quote:
Originally Posted by wrxlaunch

That's a nasty turbo for the 2.5
What would you go with instead?
Bugeye386 is online now   Reply With Quote
Old 11-10-2012, 08:58 PM   #6
thisisntjared
Scooby Specialist
 
Member#: 177891
Join Date: Apr 2008
Chapter/Region: Tri-State
Location: south jersey
Vehicle:
06 wrx wagon
child seat/tow hitch cgm

Default

Quote:
Originally Posted by Bugeye386 View Post
What would you go with instead?
i think he means nasty in a good way... but i would go with a blouch 20gxt instead. because i already did and love it.
thisisntjared is offline   Reply With Quote
Old 11-10-2012, 10:03 PM   #7
04ScoobyWtf
Scooby Specialist
 
Member#: 287974
Join Date: Jul 2011
Default

Bloush 18g xt-r will hit 350
04ScoobyWtf is offline   Reply With Quote
Old 11-11-2012, 08:55 AM   #8
tunertype
Scooby Newbie
 
Member#: 335033
Join Date: Oct 2012
Chapter/Region: NESIC
Location: Holyoke, MA
Vehicle:
2009 wrx
Dark Gray Metallic

Default

I'd get injectors and a pump. You should be able to break 300hp with that and a good tune. Fuel will be a must anyways if u upgrade the turbo.

Whats ur budget? For a cheap bolt on replacement get the blouch 20g. for about double that you can get a twin scoll kit and get better spool up on a big turbo. bigger turbo and conservative boost will give you more reliability because you'll be running more in the efficiency range. intercoolers are there to help compensate for running your turbo outside the efficient range.

meth would be the cheapest option. it would be like running e85 and having a much better intercooler for about $500.
tunertype is offline   Reply With Quote
Old 11-11-2012, 09:53 AM   #9
thisisntjared
Scooby Specialist
 
Member#: 177891
Join Date: Apr 2008
Chapter/Region: Tri-State
Location: south jersey
Vehicle:
06 wrx wagon
child seat/tow hitch cgm

Default

Quote:
Originally Posted by tunertype View Post
For a cheap bolt on replacement get the blouch 20g. for about double that you can get a twin scoll kit and get better spool up on a big turbo. bigger turbo and conservative boost will give you more reliability because you'll be running more in the efficiency range.
you might want to clarify. you aren't saying a twin scroll will spool faster than a 20gxt are you?

i can understand if you mean: a twinscroll setup will have great spool for a big turbo, but will only spool a little later than a 20gxt
thisisntjared is offline   Reply With Quote
Old 11-11-2012, 10:57 AM   #10
02_WRX_<3
Scooby Specialist
 
Member#: 226709
Join Date: Oct 2009
Chapter/Region: SCIC
Location: Victorville
Vehicle:
2002 Bugeye ftw!
Psm

Default

Quote:
Originally Posted by thisisntjared View Post
you might want to clarify. you aren't saying a twin scroll will spool faster than a 20gxt are you?

i can understand if you mean: a twinscroll setup will have great spool for a big turbo, but will only spool a little later than a 20gxt
A buddy of mine hits full boost about the exact same/a few rpm sooner than he did with a stock vf with his blouch 20g
Not sure if it's the xt or the xt-r

I don't really know why I posted that, maybe just to confirm that the 20gs spool fast as hell haha
02_WRX_<3 is offline   Reply With Quote
Old 11-14-2012, 03:48 PM   #11
Bugeye386
Scooby Newbie
 
Member#: 162975
Join Date: Oct 2007
Default

Thanks for all the info. Any other suggestions? My tuner said he can't get to 320 whp with a vf39 . Said to look at 18 or 20 g or even better the fp turbos. I'd like to keep the spool quick for fun on the street which is why in hesitant to go bigger in the turbo. That and I want to maintain some level of safety for the stock block
Bugeye386 is online now   Reply With Quote
Old 11-14-2012, 07:46 PM   #12
thisisntjared
Scooby Specialist
 
Member#: 177891
Join Date: Apr 2008
Chapter/Region: Tri-State
Location: south jersey
Vehicle:
06 wrx wagon
child seat/tow hitch cgm

Default

if i were you, i would do more research on the dyno database that cobb makes available on their website, they have loads of comparisons, athough you can only load 4 cars at a time.

further, i would speculate that the hta68 or blouch 18gxt would spool somewhat close to the vf39 and go way beyond after 4.5krpm.
thisisntjared 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 09:33 AM.


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