Welcome to the North American Subaru Impreza Owners Club Friday September 19, 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

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 11-22-2012, 02:02 AM   #1
.Boston.
Scooby Specialist
 
Member#: 223096
Join Date: Sep 2009
Chapter/Region: South East
Location: In the Mountains, NC
Vehicle:
02 SRP WRX
Full 05 STI swap T-scroll

Default Blouch 1.5xt-r twinscroll??

Hi everyone I'm currently running the Jdm twinscroll setup with the vf37 ported and a larger compressor wheel, it's currently maxed out making 330whp and 350tq at 21psi on the ej257. I'm looking to make more power, aiming for around 400whp, I have all the necessary supporting mods to handle the 400 mark. Has anyone had any experience with the blouch 1.5xt-r twinscroll? It's some what new to the line up of turbos blouch offers and I haven't found any good reviews on the web besides it supposedly spools just as fast as the vf37.. Any feedback will be appreciated!
* Registered users of the site do not see these ads.
.Boston. is offline   Reply With Quote
Old 11-22-2012, 02:10 AM   #2
murrdogg24
Scooby Guru
 
Member#: 50586
Join Date: Dec 2003
Chapter/Region: SCIC
Location: San Diego
Vehicle:
04 WRX
Flappy bird edition

Default

it should be able to get you 400whp either on e85, race gas or meth based on the reviews. I to am interested in the turbo but waiting to see more reviews.
murrdogg24 is offline   Reply With Quote
Old 11-22-2012, 02:15 AM   #3
.Boston.
Scooby Specialist
 
Member#: 223096
Join Date: Sep 2009
Chapter/Region: South East
Location: In the Mountains, NC
Vehicle:
02 SRP WRX
Full 05 STI swap T-scroll

Default

93 is my only option since the closest e85 pump is 5 hrs away
.Boston. is offline   Reply With Quote
Old 11-22-2012, 02:19 AM   #4
murrdogg24
Scooby Guru
 
Member#: 50586
Join Date: Dec 2003
Chapter/Region: SCIC
Location: San Diego
Vehicle:
04 WRX
Flappy bird edition

Default

murrdogg24 is offline   Reply With Quote
Old 11-22-2012, 02:43 AM   #5
.Boston.
Scooby Specialist
 
Member#: 223096
Join Date: Sep 2009
Chapter/Region: South East
Location: In the Mountains, NC
Vehicle:
02 SRP WRX
Full 05 STI swap T-scroll

Default

I have looked at the stock turbo location thread before but I can't seem to find 93 dyno graphs running any of the blouch ts turbos with similar mods.
My estimated guess of power after looking at what you have posted would put me under the 400 mark on pump, maybe 360-380whp

But thanks for the input!
.Boston. is offline   Reply With Quote
Old 11-22-2012, 10:35 AM   #6
pet3r
NASIOC Supporter
 
Member#: 283134
Join Date: May 2011
Location: AZ
Vehicle:
2008 STi AW
550whp - 530wtq

Default

This isn't twin scroll, but I'm running the FR 1.5 headers (almost twin scroll), running 24psi and E85.

pet3r is offline   Reply With Quote
Old 11-22-2012, 11:17 AM   #7
.Boston.
Scooby Specialist
 
Member#: 223096
Join Date: Sep 2009
Chapter/Region: South East
Location: In the Mountains, NC
Vehicle:
02 SRP WRX
Full 05 STI swap T-scroll

Default

[quote=pet3r;38549489]This isn't twin scroll, but I'm running the FR 1.5 headers (almost twin scroll), running 24psi and E85.


Stock cams?
What's your elevation?
How do you like the 1.5xt?
.Boston. is offline   Reply With Quote
Old 11-22-2012, 11:31 AM   #8
Unabomber
Big Ron
Moderator
 
Member#: 18062
Join Date: Apr 2002
Chapter/Region: MAIC
Location: I can save you a ton of cash
Vehicle:
on car parts so PM
me b4 j00 buy

Default

NO ONE can predict spool, not even Jesus. Learn that now before your thoughts fill with this issue. Second, if you already have a turbo that you like but are seeking more power, why aren't you talking this through with your tuner and a turbo vendor? It sounds like you need to learn more about turbos in general and rely more on professionals rather than knuckleheads. I don't mean this as a slight....if you want to be happy, rely on the people whom you will PAY rather than the internets. One phone call to Blouch Turbo and your tuner should be all it takes.
Unabomber is offline   Reply With Quote
Old 11-22-2012, 11:53 AM   #9
.Boston.
Scooby Specialist
 
Member#: 223096
Join Date: Sep 2009
Chapter/Region: South East
Location: In the Mountains, NC
Vehicle:
02 SRP WRX
Full 05 STI swap T-scroll

Default

Quote:
Originally Posted by Unabomber View Post
NO ONE can predict spool, not even Jesus. Learn that now before your thoughts fill with this issue. Second, if you already have a turbo that you like but are seeking more power, why aren't you talking this through with your tuner and a turbo vendor? It sounds like you need to learn more about turbos in general and rely more on professionals rather than knuckleheads. I don't mean this as a slight....if you want to be happy, rely on the people whom you will PAY rather than the internets. One phone call to Blouch Turbo and your tuner should be all it takes.

I have emailed blouch asking questions on their 1.5ts but have had no response. A phone call will be made but i dont plan on purchasing it for another 4 months. I found that the 1.5ts spools as fast as the vf37 from the blouch website under a review from someone running the nearly the same setup as what I have currently on the car. Of course I need to learn more about turbos, that's why I even posted this thread in the first place.. but im not brand new to subarus or forced induction for that matter. The only person I will be paying in the future is the tuner since I'm located 1.5 hours from the closest dyno and even then I question them since no one has been running this new turbo. I'm extremely paranoid about who tunes my cars.
Anyways all I'm looking for is any feedback from members who have used this turbo.

Last edited by .Boston.; 02-07-2013 at 11:40 AM.
.Boston. is offline   Reply With Quote
Old 11-22-2012, 07:28 PM   #10
pet3r
NASIOC Supporter
 
Member#: 283134
Join Date: May 2011
Location: AZ
Vehicle:
2008 STi AW
550whp - 530wtq

Default

Stock cams. Elevation about 2900'. Great turbo, but I'm doing a rebuild and moving to a 2.5xtr. Spool was fantastic on the 1.5 and it pulled very hard.
pet3r is offline   Reply With Quote
Old 11-23-2012, 09:39 AM   #11
Unabomber
Big Ron
Moderator
 
Member#: 18062
Join Date: Apr 2002
Chapter/Region: MAIC
Location: I can save you a ton of cash
Vehicle:
on car parts so PM
me b4 j00 buy

Default

Read what I said again. Not even Jesus can predict spool. I can find you 783 different graphs that show spool on X vs Y turbo and they will appear on a scatter plot much like the stars in the sky as mods, tuner, and they dyno all skew results. YOU DO NOT BUY TURBOS BASED ON SPOOL. Ever. You buy based on WHP goal. Read http://forums.nasioc.com/forums/show....php?t=1218459 and then call Blouch.
Unabomber is offline   Reply With Quote
Old 11-23-2012, 05:07 PM   #12
.Boston.
Scooby Specialist
 
Member#: 223096
Join Date: Sep 2009
Chapter/Region: South East
Location: In the Mountains, NC
Vehicle:
02 SRP WRX
Full 05 STI swap T-scroll

Default

Quote:
Originally Posted by Unabomber View Post
Read what I said again. Not even Jesus can predict spool. I can find you 783 different graphs that show spool on X vs Y turbo and they will appear on a scatter plot much like the stars in the sky as mods, tuner, and they dyno all skew results. YOU DO NOT BUY TURBOS BASED ON SPOOL. Ever. You buy based on WHP goal. Read http://forums.nasioc.com/forums/show....php?t=1218459 and then call Blouch.
I understand that, I'm not exactly basing my future purchase on spool "twinscrolls are awesome for quick spool though I love my vf37, again just curious about others experience. I don't know where you get me basing my thread on turbo spool alone.. I know that the whp max output is 470 or so blouch says but I know I won't see those numbers with my current setup, that's why I aim for 400ish whp.

And thanks "pet3r" for the input
.Boston. is offline   Reply With Quote
Old 11-23-2012, 05:26 PM   #13
Unabomber
Big Ron
Moderator
 
Member#: 18062
Join Date: Apr 2002
Chapter/Region: MAIC
Location: I can save you a ton of cash
Vehicle:
on car parts so PM
me b4 j00 buy

Default

Bashing = me saying that you are a dildo head. Nowhere in this thread have I called you a dildo head.

In a nice manner with no malice in my heart, PLEASE read and interpret the following:

The experiences of others and where they spool has ZERO bearing on you.

The variables to spool include:
uppipe diameter
uppipe installation
header type
header diameter
header installation
boost control method
tune
humidity
temperature
relative humidty
elevation
dyno type
tuner
engine management software
exhaust
wastegate
fuel type
water/alky injection

Add these up and multiply by 22/7 and you will get the variables that will show up on a scatter plot that looks like a Jackson Pollock painting.
Unabomber is offline   Reply With Quote
Old 11-23-2012, 05:40 PM   #14
.Boston.
Scooby Specialist
 
Member#: 223096
Join Date: Sep 2009
Chapter/Region: South East
Location: In the Mountains, NC
Vehicle:
02 SRP WRX
Full 05 STI swap T-scroll

Default

Bashing?? whoa easy there, I understand the variables and where you are coming from but all I really want to know is if anyone has had experience with this turbo. Now I don't why your making remarks of me being a dildo head lol.
But I appreciate the info you have posted so far.

Quote:
Originally Posted by Unabomber View Post
Bashing = me saying that you are a dildo head. Nowhere in this thread have I called you a dildo head.

In a nice manner with no malice in my heart, PLEASE read and interpret the following:

The experiences of others and where they spool has ZERO bearing on you.

The variables to spool include:
uppipe diameter
uppipe installation
header type
header diameter
header installation
boost control method
tune
humidity
temperature
relative humidty
elevation
dyno type
tuner
engine management software
exhaust
wastegate
fuel type
water/alky injection

Add these up and multiply by 22/7 and you will get the variables that will show up on a scatter plot that looks like a Jackson Pollock painting.
.Boston. is offline   Reply With Quote
Old 01-02-2013, 02:31 AM   #15
phlegmon
Scooby Specialist
 
Member#: 26223
Join Date: Oct 2002
Chapter/Region: SWIC
Location: Tulsa
Vehicle:
2012 GTR - on E85
07 STi twinscroll XTR

Default

Bumping 'cause I just installed/tuned a 1.5XTR twinscroll w/ Blouch 10.5cm2 twinscroll housing. Tuned via opensource. Relevant mods:

2007 STi
ID1000
Spearco TMIC
JDM long runner TGVless intake manifold
Moore Performance divorced twinscroll downpipe and Maddad Whisper 3" catback
JDM twinscroll header/uppipe
91 octane w/ a can of Torco

Outstanding street turbo. Instantaneous boost in 2nd gear and above. Doesn't even feel turbocharged anymore... more like an 8 cylinder. Torque on demand. 19psi by 3000rpm in 4th. Holds 19psi to redlline.

Nearly maxing the stock MAF (which equates to roughly 340-350whp). Not interested in pushing the envelope further (The STi is my daily beater... the GTR on E85 is my track warrior), but I'd estimate 400whp is attainable on E85 and mid 20psi boost. The billet wheels really shine at higher pressures.

Best daily driver turbo I've used yet (and I've used everything from VFs, 18g, 20g, 3071R, 3076R, and SZ55 in the past). Blows away any other street turbo I've ever used.
phlegmon is online now   Reply With Quote
Old 01-02-2013, 11:24 AM   #16
xluben
Scooby Guru
 
Member#: 261612
Join Date: Oct 2010
Location: Minneapolis, MN
Vehicle:
2002 WRX Sedan
10.9s @ 126mph

Default

Quote:
Originally Posted by Unabomber View Post
Read what I said again. Not even Jesus can predict spool. I can find you 783 different graphs that show spool on X vs Y turbo and they will appear on a scatter plot much like the stars in the sky as mods, tuner, and they dyno all skew results. YOU DO NOT BUY TURBOS BASED ON SPOOL. Ever. You buy based on WHP goal. Read http://forums.nasioc.com/forums/show....php?t=1218459 and then call Blouch.
It seems that all of your posts are based on the thinking that if results can vary, then it is impossible to know anything about the item. Do you have any background in stats/engineering? There are whole fields of study dedicated to understanding the differences in data sets. Of course results will vary (even from back to back dyno runs they'll be different), but with proper analysis you can understand this variation, and with a sufficient population of data you can still make useful comparisons.

If you actually did have "783 different graphs" from a turbo (ie. a twin scroll 1.5XTR), then it would be a very, very good dataset. You could pick a data point (say rpm@20psi), plot this out and calculate various things like mean, standard deviation, etc. Then if you had a similar dataset for another turbo (ie. a single scroll 1.5XTR) you could do the same analysis and have a very valid and useful comparison. Obviously finding 700 graphs on one turbo just isn't going to happen, but even 5 or 10 would be a good start. Especially if there isn't a lot of variation between the results.

This is exactly the same with power numbers. Saying that you can buy a turbo based on HP goal, but not spool doesn't make much sense. Both things will vary based on all of the items you listed below.

Quote:
Originally Posted by Unabomber View Post
Bashing = me saying that you are a dildo head. Nowhere in this thread have I called you a dildo head.

In a nice manner with no malice in my heart, PLEASE read and interpret the following:

The experiences of others and where they spool has ZERO bearing on you.

The variables to spool include:
uppipe diameter
uppipe installation
header type
header diameter
header installation
boost control method
tune
humidity
temperature
relative humidty
elevation
dyno type
tuner
engine management software
exhaust
wastegate
fuel type
water/alky injection

Add these up and multiply by 22/7 and you will get the variables that will show up on a scatter plot that looks like a Jackson Pollock painting.
Honestly I think that the experience of others is definitely a good thing to consider. Talking to 1 tuner might get you the experience he had with the 1 time he tuned this turbo in the past (not always the case, but it can be). The more info the better. Solely relying on a single person for direction is foolish (especially if it is a tuner, vendor, or manufacturer that stands to make money based on their recommendation).

I do agree that making a post and expecting to be spoon fed the answer is not the best way either. Most of the info can be found already online. It can be a lot of work to try and compile the info, but much of it is out there. IMO, databases like COBB and EFI have are invaluable to the community/consumer. I only wish more places would store such great data and make it publicly available.

I have no experience with the 1.5XTR twin scroll. I just felt that the thought process behind your suggestions was extremely flawed and wanted to give an alternate opinion. But based on what I've seen online I think the 1.5XTR twin scroll would be a great option for the OP. I don't think you're going to find anything that will hit 400WHP on pump and spool as quickly.
xluben is offline   Reply With Quote
Old 01-02-2013, 02:30 PM   #17
Leafy
Scooby Specialist
 
Member#: 330625
Join Date: Aug 2012
Chapter/Region: NESIC
Location: MA
Vehicle:
2006 WRX
WRB

Default

Quote:
Originally Posted by xluben View Post
I don't think you're going to find anything that will hit 400WHP on pump and spool as quickly.
EFR 6758, would be the only thing in the same neighborhood spoolwise to be able to hit 400 wheel on pump that you can currently buy, but should have better transients because of its significantly lower rotational inertia.
Leafy is offline   Reply With Quote
Old 02-07-2013, 01:59 AM   #18
.Boston.
Scooby Specialist
 
Member#: 223096
Join Date: Sep 2009
Chapter/Region: South East
Location: In the Mountains, NC
Vehicle:
02 SRP WRX
Full 05 STI swap T-scroll

Default

Quote:
Originally Posted by phlegmon View Post
Bumping 'cause I just installed/tuned a 1.5XTR twinscroll w/ Blouch 10.5cm2 twinscroll housing. Tuned via opensource. Relevant mods:

2007 STi
ID1000
Spearco TMIC
JDM long runner TGVless intake manifold
Moore Performance divorced twinscroll downpipe and Maddad Whisper 3" catback
JDM twinscroll header/uppipe
91 octane w/ a can of Torco

Outstanding street turbo. Instantaneous boost in 2nd gear and above. Doesn't even feel turbocharged anymore... more like an 8 cylinder. Torque on demand. 19psi by 3000rpm in 4th. Holds 19psi to redlline.

Nearly maxing the stock MAF (which equates to roughly 340-350whp). Not interested in pushing the envelope further (The STi is my daily beater... the GTR on E85 is my track warrior), but I'd estimate 400whp is attainable on E85 and mid 20psi boost. The billet wheels really shine at higher pressures.

Best daily driver turbo I've used yet (and I've used everything from VFs, 18g, 20g, 3071R, 3076R, and SZ55 in the past). Blows away any other street turbo I've ever used.

Great information! Are you using the stock inlet or chose 3"? Was the MAF the only thing holding you back, besides the thought of reliability?
I was ready to pull the trigger on the 3.0xt-r ts but decided I want to have spool as close to stock vf37 as possible.

As for e85, it's no where to be found in my area and looking towards a meth kit to reach higher psi. Hopefully purchasing the 1.5xt-r ts within the month, ill keep posting with any useful information.

Last edited by .Boston.; 02-07-2013 at 02:08 AM.
.Boston. is offline   Reply With Quote
Old 02-07-2013, 03:58 AM   #19
phlegmon
Scooby Specialist
 
Member#: 26223
Join Date: Oct 2002
Chapter/Region: SWIC
Location: Tulsa
Vehicle:
2012 GTR - on E85
07 STi twinscroll XTR

Default

stock size, 2.4" inlet (using the trick S204 silicone inlet).

Stock intake, so MAF resolution is the limiting factor. Like I said, it's my daily driver, so absolute power is not my goal. Rather, a fun daily driver with torque on demand. I've run it for over a month and love it!
If you're looking for a strip/race turbo, you should probably look into the 2.5XTR twinscroll or something bigger.
phlegmon is online now   Reply With Quote
Old 02-07-2013, 04:39 AM   #20
TurboJunkie85
Scooby Specialist
 
Member#: 193412
Join Date: Nov 2008
Chapter/Region: RMIC
Vehicle:
1985 pumas.
white

Default

@ Phlegmon me and you are almost running the same setup lol!

TurboJunkie85 is offline   Reply With Quote
Old 02-07-2013, 07:19 AM   #21
phlegmon
Scooby Specialist
 
Member#: 26223
Join Date: Oct 2002
Chapter/Region: SWIC
Location: Tulsa
Vehicle:
2012 GTR - on E85
07 STi twinscroll XTR

Default

Quote:
Originally Posted by TurboJunkie85 View Post
@ Phlegmon me and you are almost running the same setup lol!

http://www.youtube.com/watch?v=XsT78-MrIqY
We differ in one critical area: I'm running the twinscroll 10.5" hotside and Spec C twinscroll headers/uppipe. Regardless, nice build you have there!
phlegmon is online now   Reply With Quote
Old 02-07-2013, 11:55 AM   #22
WhatTurboLag?
Scooby Specialist
 
Member#: 243992
Join Date: Apr 2010
Chapter/Region: MWSOC
Location: Morton Grove, Illinois
Vehicle:
2006 WRX TR
WRB

Default

I'm still looking into this. But I think I'm set on the bw 7670 or 8070 (non efr) and a full race or Moore ts kit.
WhatTurboLag? is offline   Reply With Quote
Old 02-07-2013, 12:00 PM   #23
Leafy
Scooby Specialist
 
Member#: 330625
Join Date: Aug 2012
Chapter/Region: NESIC
Location: MA
Vehicle:
2006 WRX
WRB

Default

Quote:
Originally Posted by WhatTurboLag? View Post
I'm still looking into this. But I think I'm set on the bw 7670 or 8070 (non efr) and a full race or Moore ts kit.
Get the EFR. just the mass reduction on the turbine wheel is worth it. I might be biased, theres a 6758 sitting on my work bench waiting for me to fab up an exhaust manifold so it can go in the racecar.
Leafy is offline   Reply With Quote
Old 02-07-2013, 12:01 PM   #24
WhatTurboLag?
Scooby Specialist
 
Member#: 243992
Join Date: Apr 2010
Chapter/Region: MWSOC
Location: Morton Grove, Illinois
Vehicle:
2006 WRX TR
WRB

Default

Nope not a fan of the Efr stuff. Only running a bw turbo for its MASSIVE size and the fact it's cheap. Other than that I wouldn't buy anything but precision turbos
WhatTurboLag? is offline   Reply With Quote
Old 02-07-2013, 12:06 PM   #25
Leafy
Scooby Specialist
 
Member#: 330625
Join Date: Aug 2012
Chapter/Region: NESIC
Location: MA
Vehicle:
2006 WRX
WRB

Default

Really? The only downside I can see to the efr is that there isnt a v-band inlet turbine housing available. For the feature-set, aerodynamics, and materials used (main winner here is that turbine wheel), I don't think there is any turbo an average consumer can buy that matches it.
Leafy 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 03:27 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.