Welcome to the North American Subaru Impreza Owners Club Wednesday April 16, 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 General > Proven Power Bragging

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 06-07-2011, 01:19 PM   #326
Phatron
Scooby Guru
 
Member#: 36033
Join Date: Apr 2003
Chapter/Region: SCIC
Location: Tuning Lab
Vehicle:
CEO PhatBottiTuning
2006 STi GTX3582 + Meth

Default

IMO anything in the 49-52 lbm turbo range is the perfect DD turbo for a 2.5L. Green, 3076, any of the Dom xt/xtr's in that range.

With the increased compression and e85 i'd go up to a dom3xtr or dom4xtr.

I've been DD'ing the dom4xtr on 91+meth for 18months and its great and i didnt feel any great loss in spool compared to the OG Green or HTA Green.
* Registered users of the site do not see these ads.
Phatron is offline   Reply With Quote
Old 06-07-2011, 01:29 PM   #327
Clark Turner
NASIOC Vendor
 
Member#: 178047
Join Date: Apr 2008
Chapter/Region: SWIC
Location: AZ/Vegas
Vehicle:
02 WRX STI Spec C
Black

Default

No GTX in stock location. The GTX spool later then the GT. I have dont a ton of them now. They are made for road/drag racing, response and top end power. You want low to midrange.

For an autoX car, i would just do a Stock turbo on E85. You get 450ft bls and 360hp with fast spool. Nice broad power band. Of course my favorite for a street car is the 8CM 20G. Near stock spool, Cheap and they will do 400+ easy on E85.

I have not had good luck with the maybe 20 or 30 GT3071s. Its just to small for the 2.5. You end up making less power then the cheap 20G and I see no advantage anywhere else. Leave that one for the 1.8 honda guys and 2.0 WRXs.

C
Clark Turner is offline   Reply With Quote
Old 06-07-2011, 02:19 PM   #328
Squidz
Scooby Guru
 
Member#: 142608
Join Date: Mar 2007
Chapter/Region: TXIC
Location: Cute fuzzy cuddly kitten hell.
Vehicle:
2003 Sonic Yellow
Marginally well behaved.

Default

Quote:
Originally Posted by Clark Turner View Post
No GTX in stock location. The GTX spool later then the GT. I have dont a ton of them now. They are made for road/drag racing, response and top end power. You want low to midrange.

For an autoX car, i would just do a Stock turbo on E85. You get 450ft bls and 360hp with fast spool. Nice broad power band. Of course my favorite for a street car is the 8CM 20G. Near stock spool, Cheap and they will do 400+ easy on E85.

I have not had good luck with the maybe 20 or 30 GT3071s. Its just to small for the 2.5. You end up making less power then the cheap 20G and I see no advantage anywhere else. Leave that one for the 1.8 honda guys and 2.0 WRXs.

C
Hey Clark, been a while man. I really appreciate all the input. I'm guessing that you are talking about Crank HP...cause i have been told the 20G won't come anywhere close to the 400 WHP mark. The stock turbo just isn't enough power for SM and certainly not for any of the Prepared classes IMHO.

Not sure what you mean by the 3071 being too small...i was worried about it being too big.

Just talked with Jeff at Perrin and he suggested the Dom 2.5, or even the smaller Dom 1.5, both are available with 8cm or 10cm housings.
Squidz is offline   Reply With Quote
Old 06-07-2011, 02:27 PM   #329
Clark Turner
NASIOC Vendor
 
Member#: 178047
Join Date: Apr 2008
Chapter/Region: SWIC
Location: AZ/Vegas
Vehicle:
02 WRX STI Spec C
Black

Default

I am talking about E85. On E85 the Stock turbo does about 350. On e85 the 20G will go right over 400 easy.

C
Clark Turner is offline   Reply With Quote
Old 06-07-2011, 02:33 PM   #330
sumfoo1
Scooby Specialist
 
Member#: 82146
Join Date: Mar 2005
Chapter/Region: South East
Location: Raleigh, NC (Brier Creek)
Vehicle:
2005 Legacy GT
OBP

Default

Yeah if you're running e85 i would go 20g or maybe even HTA68 (there are some 390hp plots on the thread but it may be on happy dynos) will get you close on E-85 and will have crap-tons of low end torque and response to pull you out of turns.

the turbos you mentioned are 400whp on pump gas sized turbos.
(well the 3071 is a little small for that)

if i were you i'd be looking at HTA68 8cm housing, 20g (td06?), and the biggest turbo i would consider is the atp3071/dom2.5xtr
sumfoo1 is offline   Reply With Quote
Old 06-07-2011, 02:49 PM   #331
Clark Turner
NASIOC Vendor
 
Member#: 178047
Join Date: Apr 2008
Chapter/Region: SWIC
Location: AZ/Vegas
Vehicle:
02 WRX STI Spec C
Black

Default

Skip the HTA68 IMO
Clark Turner is offline   Reply With Quote
Old 06-07-2011, 03:13 PM   #332
juanmedina
Scooby Guru
 
Member#: 133146
Join Date: Nov 2006
Location: SC
Vehicle:
07 FPgreen 7.37@95
WRX VF39+E85 12.0, 121mph

Default

Quote:
Originally Posted by Phatron View Post
ATP hasnt released the gtx stock location turbos yet.....

But blouch has a large catalogue of stock location billet wheel'd turbos, journal and BB options, and 7,8 and 10cm turbine housing options.

Pretty much any flow rate you want between 44-65 lbm
Quote:
Originally Posted by Phatron View Post
IMO anything in the 49-52 lbm turbo range is the perfect DD turbo for a 2.5L. Green, 3076, any of the Dom xt/xtr's in that range.

With the increased compression and e85 i'd go up to a dom3xtr or dom4xtr.

I've been DD'ing the dom4xtr on 91+meth for 18months and its great and i didnt feel any great loss in spool compared to the OG Green or HTA Green.
Quote:
Originally Posted by Clark Turner View Post
No GTX in stock location. The GTX spool later then the GT. I have dont a ton of them now. They are made for road/drag racing, response and top end power. You want low to midrange.

For an autoX car, i would just do a Stock turbo on E85. You get 450ft bls and 360hp with fast spool. Nice broad power band. Of course my favorite for a street car is the 8CM 20G. Near stock spool, Cheap and they will do 400+ easy on E85.

I have not had good luck with the maybe 20 or 30 GT3071s. Its just to small for the 2.5. You end up making less power then the cheap 20G and I see no advantage anywhere else. Leave that one for the 1.8 honda guys and 2.0 WRXs.

C
It depends on the dyno the older 20Gs will struggle to make 400whp on Airboy, I have seen on only actually make 400whp. The newer billet one should not have a problem if they really flow what they say they do.

A OG FP green spool amazing on E85 with a 7cm2. I make 420whp and only lost a few rpm compared to my VF39.

Do you guys really believe on high compression making a difference?
juanmedina is offline   Reply With Quote
Old 06-07-2011, 03:13 PM   #333
sumfoo1
Scooby Specialist
 
Member#: 82146
Join Date: Mar 2005
Chapter/Region: South East
Location: Raleigh, NC (Brier Creek)
Vehicle:
2005 Legacy GT
OBP

Default

^^ the more i looked into it... i agree skip the hta68...

^ it makes an efficiency difference so it should help both spool, and power.

But it should help mpg the most lol.
sumfoo1 is offline   Reply With Quote
Old 06-07-2011, 06:50 PM   #334
hally
Scooby Newbie
 
Member#: 123652
Join Date: Aug 2006
Chapter/Region: International
Location: Australia
Vehicle:
2003 STi Built EJ257
APS SR55 380WHP@20psi

Default

Quote:
Originally Posted by Clark Turner View Post
No GTX in stock location. The GTX spool later then the GT. I have dont a ton of them now. They are made for road/drag racing, response and top end power. You want low to midrange.

For an autoX car, i would just do a Stock turbo on E85. You get 450ft bls and 360hp with fast spool. Nice broad power band. Of course my favorite for a street car is the 8CM 20G. Near stock spool, Cheap and they will do 400+ easy on E85.

I have not had good luck with the maybe 20 or 30 GT3071s. Its just to small for the 2.5. You end up making less power then the cheap 20G and I see no advantage anywhere else. Leave that one for the 1.8 honda guys and 2.0 WRXs.

C
Hey Clark,
Have you done any GTX3071's yet? Interested in seeing how they compare to the GT3076.

When you say the GTX's are coming on later than the GT's, roughly how much difference is there between the GTX30 and GT30, spool and power(on a biult motor with cams and porting)?

Thanks.

Last edited by hally; 06-07-2011 at 07:01 PM.
hally is offline   Reply With Quote
Old 06-07-2011, 07:02 PM   #335
Clark Turner
NASIOC Vendor
 
Member#: 178047
Join Date: Apr 2008
Chapter/Region: SWIC
Location: AZ/Vegas
Vehicle:
02 WRX STI Spec C
Black

Default

Juan. We are talking about E85. A Cheap 20G will do 400 very easy on E85. It also spools super fast. Win win.

I dont have any GTX3071 info to share. I wish I did.

The GTX does come on later. It depends on the set and engine of course. However, It direct swaps, On the 30R version there seems to be 300 to 400 rpm later. The good news is that they make more power up top. So most of the time its a win. But for a street car on pump gas, I would get the Regular GT3076. Its a delight.

Shawn:

On E85 its simple:
Stock turbo 350 (maxed)
20G with 8cm housing: 400+ super easy.
Dom 3 stock location 450 easy but much more lag.



C
Clark Turner is offline   Reply With Quote
Old 06-07-2011, 07:16 PM   #336
hally
Scooby Newbie
 
Member#: 123652
Join Date: Aug 2006
Chapter/Region: International
Location: Australia
Vehicle:
2003 STi Built EJ257
APS SR55 380WHP@20psi

Default

Quote:
Originally Posted by Clark Turner View Post
The GTX does come on later. It depends on the set and engine of course. However, It direct swaps, On the 30R version there seems to be 300 to 400 rpm later. The good news is that they make more power up top. So most of the time its a win. But for a street car on pump gas, I would get the Regular GT3076. Its a delight.
C
Thanks.

Currently have APS SR55(GT3076) bolton at 412whp on 20psi, tried 25psi just wont push the air. Wanting a billet that still add power past 20psi. Atm, 20psi hits at 3700rpm in 4th on a short ratio 6mt.

The GTX30 on 25psi should see more at 4k(midrange) and more near redline? Was thinking of just getting a GTX30 with 3in cover and fitting it straight to my APS rear housing.
hally is offline   Reply With Quote
Old 06-07-2011, 07:55 PM   #337
Squidz
Scooby Guru
 
Member#: 142608
Join Date: Mar 2007
Chapter/Region: TXIC
Location: Cute fuzzy cuddly kitten hell.
Vehicle:
2003 Sonic Yellow
Marginally well behaved.

Default

Quote:
Originally Posted by Clark Turner View Post
Shawn:

On E85 its simple:
Stock turbo 350 (maxed)
20G with 8cm housing: 400+ super easy.
Dom 3 stock location 450 easy but much more lag.
Would the ball-bearing 8cm 20G variant be a good idea? I got no problem spending the money if it will help. Trying to do this right the first time.

Clark, you're awesome man...Thanks!

Now, you wanna come back to Texas and tune her to 400 whp for me?
Squidz is offline   Reply With Quote
Old 06-08-2011, 12:11 AM   #338
spdracerut
Scooby Newbie
 
Member#: 269226
Join Date: Jan 2011
Default

Has anyone asked ATP if they're going to do a stock location GTX3071? I imagine they will as they've already done them for Evos.
spdracerut is offline   Reply With Quote
Old 06-08-2011, 07:28 AM   #339
CJ68
Scooby Newbie
 
Member#: 187419
Join Date: Aug 2008
Chapter/Region: Tri-State
Location: Southold, NY
Vehicle:
2001 2.5RS
Sedona Red

Default

Clark, I tried to send you a PM to keep the OT convo to a minimum. Could you send me your email or something so I can ask you a few questions?
CJ68 is offline   Reply With Quote
Old 06-08-2011, 11:25 AM   #340
sumfoo1
Scooby Specialist
 
Member#: 82146
Join Date: Mar 2005
Chapter/Region: South East
Location: Raleigh, NC (Brier Creek)
Vehicle:
2005 Legacy GT
OBP

Default

I don't see ATP making a GTX 3071 stock location. I don't know if they require the anti-surge housing or what the deal is but if they were going to do it i think it would be done by now. It should just be using their gt3076 turbine housing with a gt3071 compressor cover if they were going to do it i would think it would be just off the shelf parts.

My thoughts are either they did it and the results were either poor (compressor surge/laggy)or identical to the 3076 so they couldn't justify the cost.

Or
I'm completely wrong and their existing housings won't fit and they're in development now.

the inducer is slightly larger so maybe they need a new compressor cover.

Last edited by sumfoo1; 06-08-2011 at 11:27 AM. Reason: .
sumfoo1 is offline   Reply With Quote
Old 06-08-2011, 11:40 AM   #341
juanmedina
Scooby Guru
 
Member#: 133146
Join Date: Nov 2006
Location: SC
Vehicle:
07 FPgreen 7.37@95
WRX VF39+E85 12.0, 121mph

Default

Quote:
Originally Posted by Clark Turner View Post
Juan. We are talking about E85. A Cheap 20G will do 400 very easy on E85. It also spools super fast. Win win.

I dont have any GTX3071 info to share. I wish I did.

The GTX does come on later. It depends on the set and engine of course. However, It direct swaps, On the 30R version there seems to be 300 to 400 rpm later. The good news is that they make more power up top. So most of the time its a win. But for a street car on pump gas, I would get the Regular GT3076. Its a delight.

Shawn:

On E85 its simple:
Stock turbo 350 (maxed)
20G with 8cm housing: 400+ super easy.
Dom 3 stock location 450 easy but much more lag.



C
I know Clark I was referring to E85or racegas, like I said on Airboy i have seen only one 20g make 400whp.

I will be testing one of the newer billet 20gs soon, we will see at what power maxes out. My OG FP green ported 7cm2 makes 420whp maxout on E85.
juanmedina is offline   Reply With Quote
Old 06-08-2011, 11:47 AM   #342
sumfoo1
Scooby Specialist
 
Member#: 82146
Join Date: Mar 2005
Chapter/Region: South East
Location: Raleigh, NC (Brier Creek)
Vehicle:
2005 Legacy GT
OBP

Default

^ what turbo inlet pipe are you using?
sumfoo1 is offline   Reply With Quote
Old 06-08-2011, 11:54 AM   #343
juanmedina
Scooby Guru
 
Member#: 133146
Join Date: Nov 2006
Location: SC
Vehicle:
07 FPgreen 7.37@95
WRX VF39+E85 12.0, 121mph

Default

Quote:
Originally Posted by sumfoo1 View Post
^ what turbo inlet pipe are you using?
A collapsing 2.4" gimmick turbo inlet . Which on do you guys recommend ? I heard good thinks about the Perrin one. I have clamps around mine to keep it from collapsing it works fine.
juanmedina is offline   Reply With Quote
Old 06-08-2011, 12:00 PM   #344
spdracerut
Scooby Newbie
 
Member#: 269226
Join Date: Jan 2011
Default

Quote:
Originally Posted by sumfoo1 View Post
I don't see ATP making a GTX 3071 stock location. I don't know if they require the anti-surge housing or what the deal is but if they were going to do it i think it would be done by now. It should just be using their gt3076 turbine housing with a gt3071 compressor cover if they were going to do it i would think it would be just off the shelf parts.

My thoughts are either they did it and the results were either poor (compressor surge/laggy)or identical to the 3076 so they couldn't justify the cost.

Or
I'm completely wrong and their existing housings won't fit and they're in development now.

the inducer is slightly larger so maybe they need a new compressor cover.
I'll throw in one more option: there aren't any GTX3071 left until supply picks up. Can't develop something if you don't have parts to sell. Hopefully they become more available soon.
spdracerut is offline   Reply With Quote
Old 06-08-2011, 12:21 PM   #345
Nuke209
Scooby Specialist
 
Member#: 108089
Join Date: Feb 2006
Chapter/Region: MWSOC
Location: Minnesota
Vehicle:
2003 WRX
NF Performance

Default

*impatiently waiting for the gtx3071r to arrive*
Been over a month, but it's not for a subaru also, lol
Nuke209 is offline   Reply With Quote
Old 06-08-2011, 12:39 PM   #346
CJ68
Scooby Newbie
 
Member#: 187419
Join Date: Aug 2008
Chapter/Region: Tri-State
Location: Southold, NY
Vehicle:
2001 2.5RS
Sedona Red

Default

What about the GTX3071 and GTX3076 on pump gas (93) and no meth on a 2.5L? Or the regular GT models for that matter. Understandably most people who go to this level of modification install meth injection at the same time but I'd like to see what the numbers and spool look like. I'll probably get meth injection eventually but want to know if I should bother running one of these turbos without it. I would rather not be dependent on meth in my DD then have the option to turn the system on and load a different tune when I want to beat on my car. I've been poking around looking for results but don't remember finding a similar setup. I know both here and in the EFR thread Jeff wanted to test with the meth turned off but didn't have time.
CJ68 is offline   Reply With Quote
Old 06-08-2011, 09:08 PM   #347
Nisstrust
Scooby Newbie
 
Member#: 255202
Join Date: Aug 2010
Chapter/Region: International
Default

Quote:
Originally Posted by CJ68 View Post
What about the GTX3071 and GTX3076 on pump gas (93) and no meth on a 2.5L? Or the regular GT models for that matter. Understandably most people who go to this level of modification install meth injection at the same time but I'd like to see what the numbers and spool look like. I'll probably get meth injection eventually but want to know if I should bother running one of these turbos without it. I would rather not be dependent on meth in my DD then have the option to turn the system on and load a different tune when I want to beat on my car. I've been poking around looking for results but don't remember finding a similar setup. I know both here and in the EFR thread Jeff wanted to test with the meth turned off but didn't have time.
Did you see my result a page back? I am running on pump 98 which is your equivalent 93 pump, with no meth on an EJ25. Its the GTX3076R with a 0.82a/r rear and its my daily driver, as you can see by the graph power comes on relatively early. Its making positive boost by around 3100rpm, by 3500rpm its in full swing, and it feels extremely torquey, with torque peaking by 4700rpm. It is an extremely steerable setup and insanely quick.
Nisstrust is offline   Reply With Quote
Old 06-08-2011, 10:01 PM   #348
nacho6706
Scooby Newbie
 
Member#: 165611
Join Date: Dec 2007
Default

Quote:
Originally Posted by Clark Turner View Post
I am talking about E85. On E85 the Stock turbo does about 350. On e85 the 20G will go right over 400 easy.

C
With IWG or EWG?
nacho6706 is offline   Reply With Quote
Old 06-08-2011, 10:19 PM   #349
CJ68
Scooby Newbie
 
Member#: 187419
Join Date: Aug 2008
Chapter/Region: Tri-State
Location: Southold, NY
Vehicle:
2001 2.5RS
Sedona Red

Default

Quote:
Originally Posted by Nisstrust

Did you see my result a page back? I am running on pump 98 which is your equivalent 93 pump, with no meth on an EJ25. Its the GTX3076R with a 0.82a/r rear and its my daily driver, as you can see by the graph power comes on relatively early. Its making positive boost by around 3100rpm, by 3500rpm its in full swing, and it feels extremely torquey, with torque peaking by 4700rpm. It is an extremely steerable setup and insanely quick.
Edit: I did see your post and made a personal note to go back and do the unit conversions so I could better comprehend what I was looking at. Then Clark chimed in and said 398 at the crank and I said to myself that I want that power to the wheels so I didn't even look at your build thread. Now I'll go take a closer look.

I would like to see a setup with the .63 a/r turbine no meth. And a GT/GTX3071 with no meth. I want a little quicker spool but still hoping to get in the 400whp/tq range. by time I hit 5000RPM in my small town I am already on the brakes...

Last edited by CJ68; 06-09-2011 at 01:35 PM.
CJ68 is offline   Reply With Quote
Old 06-08-2011, 10:36 PM   #350
HunterJohn
Scooby Newbie
 
Member#: 285153
Join Date: Jun 2011
Default

How do you guys enjoy the new turbo's on your car? is it an extreme difference over stock?
HunterJohn 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
Got some new toys for the car. Pics inside... shady North West Impreza Club Forum -- NWIC 11 03-23-2009 09:25 PM
My new 107hp toy.. short Video inside RC0310 Member's Car Gallery 23 03-29-2007 11:56 PM
My new toy,WOOT *pic inside*. joe r North West Impreza Club Forum -- NWIC 23 10-16-2006 10:06 PM
Imprezaf's new toy! (pssst STi inside!) ZoomnWRX Tri-State Area Forum 29 06-26-2003 09:05 AM
Did you guys see my new toy? I know Goosey has... JGard Off-Topic 21 09-29-2002 10:30 AM


All times are GMT -4. The time now is 04:42 PM.


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.