Welcome to the North American Subaru Impreza Owners Club Monday May 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 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 07-12-2010, 11:39 PM   #1
Flyin_Hayn
Scooby Specialist
 
Member#: 175031
Join Date: Mar 2008
Chapter/Region: NWIC
Location: Sauce Town, OR
Vehicle:
2005 PSM STi
Stage2 303awhp / 331awtq

Default

Here it is.. hopes it enough info...

Thought id add the vid....




Event: Dyno
Location: Performance Race Engineering. Portland, OR
Ambient Temp: 81F
Elevation: ~178ft
Weather: sunny

Car: 2004 WRX 2.5l Hybrid (EJ257)
Tuner: Bobby @ PRE
Dyno Info: Dyno Dynamics
Transmission: 5spd Stock
Gear: 3rd
Peak HP at RPM: 319.6WHP @ 5750RPM
Peak Torque at RPM: 346WTQ @ 4900RPM
Baseline hp/tq for a stock on same dyno: STOCK ~185whp: 2.5l Hybrid TD04 225WHP/270WTQ (all existing mods except turbo and injectors)
Target Boost: 19psi Tapered to 17psi
Target AFR: 11.2
Fuel: 92 Octane Unleaded Shell V-Power
Engine/Power Modifications: TurboSmart MBC, Stock EJ257, Stock EJ205 Heads, GPmoto Short Ram w/AEM Dry Filter, AVO Silicone Intake, HTA68 w/8cm, APS Topmount, APS Hybrid BOV, GPMoto EL Headers, TopSpeed 4" DP, Titanium 3" Catback.
Driveline Modifications: Stock Transmission, Stage 2 Exedy Clutch
Suspension Modifications: IPD Struts, GPmoto Coiulovers, IPD Tower Braces
Other Modifications: Front Brembo Calipers...

WHP, WTQ...


Uploaded with ImageShack.us

AFR, PSI...


Uploaded with ImageShack.us

Thanks For Looking!
* Registered users of the site do not see these ads.

Last edited by Flyin_Hayn; 09-16-2010 at 12:41 PM. Reason: Lack of info..Corrected
Flyin_Hayn is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 07-12-2010, 11:58 PM   #2
Equilibrium Tuning
Former Vendor
 
Member#: 26933
Join Date: Oct 2002
Chapter/Region: BAIC
Location: Fairfield, CA
Vehicle:
2006 STI
CGM

Default

Full boost at 4k RPM and a huge nose dive in power after 6k RPM? That's not much of a powerband for this "godly" turbo

-- Ed
Equilibrium Tuning is offline   Reply With Quote
Old 07-13-2010, 12:07 AM   #3
Flyin_Hayn
Scooby Specialist
 
Member#: 175031
Join Date: Mar 2008
Chapter/Region: NWIC
Location: Sauce Town, OR
Vehicle:
2005 PSM STi
Stage2 303awhp / 331awtq

Default

Quote:
Originally Posted by Equilibrium Tuning View Post
Full boost at 4k RPM and a huge nose dive in power after 6k RPM? That's not much of a powerband for this "godly" turbo

-- Ed
Please feel free to point me in the direction of any 18 or 20g that doesnt plummet fter 6k..

and full boost was @3800-3900

i honestly couldnt complain. heat soaked top mount and 80degree shop temp. The heat + an ~8.881:1 compression is gonna kill your top end..
0.02
a dyno# is a dyno number.
I admire its ability to hold above 17psi to redline..

Last edited by Flyin_Hayn; 07-13-2010 at 12:49 AM.
Flyin_Hayn is offline   Reply With Quote
Old 07-13-2010, 12:56 AM   #4
SVT_WRX
Scooby Specialist
 
Member#: 164830
Join Date: Nov 2007
Chapter/Region: SCIC
Location: San Diego
Vehicle:
2002 WRX
G61 III OVE 58e

Default

Your thread is lacking detail. Fuel? AFR's? Elevation, etc..

http://forums.nasioc.com/forums/show....php?t=1858764
SVT_WRX is offline   Reply With Quote
Old 07-13-2010, 02:57 AM   #5
GundamFan
Scooby Newbie
 
Member#: 212204
Join Date: May 2009
Location: socal
Vehicle:
2002 WRX

Default

I dont know if my turbo is gifted but my 16g holds 18psi till redline on my ej205 and its a small 16g!!
GundamFan is offline   Reply With Quote
Old 07-13-2010, 03:12 AM   #6
907Bum
Scooby Specialist
 
Member#: 183634
Join Date: Jul 2008
Chapter/Region: RMIC
Location: At the "B"
Vehicle:
02 wrx/ 92 ss
Booze fueled :)

Default

2 liter vs a 2.5 is all thats going on. Plus what size hta is it? 10cm? what?
907Bum is offline   Reply With Quote
Old 07-13-2010, 04:36 AM   #7
Flyin_Hayn
Scooby Specialist
 
Member#: 175031
Join Date: Mar 2008
Chapter/Region: NWIC
Location: Sauce Town, OR
Vehicle:
2005 PSM STi
Stage2 303awhp / 331awtq

Default

Second pic shows afr and boost

19psi peak tapered to 17. Cut it off @ 19 due to top mount.
Afrs are 11.2~3
Flyin_Hayn is offline   Reply With Quote
Old 07-13-2010, 04:37 AM   #8
Flyin_Hayn
Scooby Specialist
 
Member#: 175031
Join Date: Mar 2008
Chapter/Region: NWIC
Location: Sauce Town, OR
Vehicle:
2005 PSM STi
Stage2 303awhp / 331awtq

Default

Info added.. hope its enough..lol

Last edited by Flyin_Hayn; 07-13-2010 at 05:42 AM.
Flyin_Hayn is offline   Reply With Quote
Old 07-13-2010, 05:43 AM   #9
Flyin_Hayn
Scooby Specialist
 
Member#: 175031
Join Date: Mar 2008
Chapter/Region: NWIC
Location: Sauce Town, OR
Vehicle:
2005 PSM STi
Stage2 303awhp / 331awtq

Default

Quote:
Originally Posted by GundamFan View Post
I dont know if my turbo is gifted but my 16g holds 18psi till redline on my ej205 and its a small 16g!!
this turbo can hold 19psi easy to redline fyi.

my top mount is holding it back.
Tuner says front mount will up it to 22-23psi taper to 19-20psi.
Flyin_Hayn is offline   Reply With Quote
Old 07-13-2010, 06:03 AM   #10
stidoc
Scooby Specialist
 
Member#: 147579
Join Date: Apr 2007
Default

It's not your topmount.
stidoc is offline   Reply With Quote
Old 07-13-2010, 06:20 AM   #11
jaxscuby
Sammo Hung
Moderator
 
Member#: 10613
Join Date: Sep 2001
Chapter/Region: South East
Location: S Ga / N Fla
Vehicle:
2002 USDM WRX
WRB

Default

its your short ram in the engine bay..
jaxscuby is offline   Reply With Quote
Old 07-13-2010, 08:00 AM   #12
STi Mikey
Scooby Specialist
 
Member#: 114631
Join Date: May 2006
Chapter/Region: Tri-State
Location: TheShopCT / EFI LOGICS
Vehicle:
2009 GTR, 735whp
13' Benz, 15' WRX

Default

Quote:
Originally Posted by Equilibrium Tuning View Post
Full boost at 4k RPM and a huge nose dive in power after 6k RPM? That's not much of a powerband for this "godly" turbo

-- Ed
Just another 2 months and Nasioc will see what this baby snail is made of
The project is progressing


OP, did your tuner comment on why power is dropping off? Usually on both the 2.0 & 2.5 power carries to redline.
STi Mikey is offline   Reply With Quote
Old 07-13-2010, 09:53 AM   #13
BUILTSTI
Scooby Specialist
 
Member#: 204644
Join Date: Mar 2009
Chapter/Region: Tri-State
Location: THESHOPCT
Vehicle:
2005 STi 10.7 @ 125
FPRED PUMPGAS 93oct

Default

Hot weather
Top mount
higher compression

10.5 dip ? eek
BUILTSTI is offline   Reply With Quote
Old 07-13-2010, 11:30 AM   #14
downpipe12
Scooby Newbie
 
Member#: 212666
Join Date: May 2009
Chapter/Region: Tri-State
Location: Rocky Point
Vehicle:
2002 WRX Wagon,
Black, EVOIII16G+Meth

Default

Could this be related to the problems associated with the CC of the 2.0 heads on the 2.5 block?
downpipe12 is offline   Reply With Quote
Old 07-13-2010, 11:30 AM   #15
BenGSX
Scooby Specialist
 
Member#: 210061
Join Date: Apr 2009
Chapter/Region: BAIC
Location: Elk Grove, CA
Default

I've pushed as much as ~30 psi through mine now above 5krpm on a 2.0.. The turbo can produce decent boost - But I have noticed that it is pretty cranky about getting a good fresh air supply.. On a dyno without a fan on the intake filter I couldn't build more than 23 ish PSI.. On the road with my intake sitting behind an open foglight, 28psi to redline was no problem. - And this was on the internal gate.
BenGSX is offline   Reply With Quote
Old 07-13-2010, 11:41 AM   #16
sidewayz
Scooby Specialist
 
Member#: 5810
Join Date: Apr 2001
Chapter/Region: Tri-State
Location: Easton PA
Vehicle:
2001 S366 2.5RS

Default

Quote:
Originally Posted by Flyin_Hayn View Post
Please feel free to point me in the direction of any 18 or 20g that doesnt plummet fter 6k..

and full boost was @3800-3900

i honestly couldnt complain. heat soaked top mount and 80degree shop temp. The heat + an ~8.881:1 compression is gonna kill your top end..
0.02
a dyno# is a dyno number.
I admire its ability to hold above 17psi to redline..
this hta68 holds till redline.
http://i12.photobucket.com/albums/a248/Hans91GT/Rob.jpg
sidewayz is offline   Reply With Quote
Old 07-13-2010, 01:46 PM   #17
Flyin_Hayn
Scooby Specialist
 
Member#: 175031
Join Date: Mar 2008
Chapter/Region: NWIC
Location: Sauce Town, OR
Vehicle:
2005 PSM STi
Stage2 303awhp / 331awtq

Default

Quote:
Originally Posted by BUILTSTI View Post
Hot weather
Top mount
higher compression

10.5 dip ? eek
Quote:
Originally Posted by downpipe12 View Post
Could this be related to the problems associated with the CC of the 2.0 heads on the 2.5 block?
Well the ic was heatsoakked no doubt. None of my exhaust is heat wrapped.

The comp ratio in the ej257 is ~8:88:1. That's a big jump from 8.35?:1?

Bobby said that the dip up top is almost identical to his other tunes. Says the compressor can't. Keep up with the 2.5liter displacement demands. He said the 2liters will continue to clime because that turbo can supply them easily where as the td05 runs out of breathe up top. He said porting and polishing the heads and larger cams will eliminate that almost completely.
Another note he said was that they actually make more high end hp on the hta with unequal length headers. "The lower end torqque almost helps the engine climp up top.."
I'm gonna port my stock headers and pick up an up pipe to make comparisons sometime in the near future.
I've noticed the stock wrx longblocks are making even more on this turbo and the evoiii near the top and I believe its directly related to there lower compression ratio imho.
If you take a look @ some dyno graphs of the ej255 and ej257 the 255 really shines up high, where as the 257 with 2.0heads shines much better low to mid and begins to drop up near 6k~

All in all I personally believe. The ej257 hybrids aren't all there set out to be without bored out heads or a complete swap. The stock 2.5 sti long block would've mad 330 with my set up and I'm guessing no drop up top.

Let me know what you guys think...

Last edited by Flyin_Hayn; 07-13-2010 at 02:03 PM.
Flyin_Hayn is offline   Reply With Quote
Old 07-13-2010, 02:06 PM   #18
Flyin_Hayn
Scooby Specialist
 
Member#: 175031
Join Date: Mar 2008
Chapter/Region: NWIC
Location: Sauce Town, OR
Vehicle:
2005 PSM STi
Stage2 303awhp / 331awtq

Default

Do you think my turbosmart mbc is effecting boost threshold.....? It is a cheap little thing LOL.

Check out the vid, tell me if there's anything out of the norm...
Sound quality bites..
http://m.youtube.com/#/watch?desktop...BzyC2lNM&gl=US

Last edited by Flyin_Hayn; 07-13-2010 at 02:11 PM.
Flyin_Hayn is offline   Reply With Quote
Old 07-13-2010, 02:15 PM   #19
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 Flyin_Hayn View Post
Do you think my turbosmart mbc is effecting boost threshold.....? It is a cheap little thing LOL.

Check out the vid, tell me if there's anything out of the norm...
Sound quality bites..
http://m.youtube.com/#/watch?desktop...BzyC2lNM&gl=US
I remember someone said that the turbosmart mbc does not hold boost well, he recommended switching to the Hallman mbc. Everyone knows that the Hallman mbc rocks
juanmedina is offline   Reply With Quote
Old 07-13-2010, 02:25 PM   #20
Phatron
Scooby Guru
 
Member#: 36033
Join Date: Apr 2003
Chapter/Region: SCIC
Location: Tuning Lab
Vehicle:
CEO PhatBottiTuning
2006 STi GTX3582 + Meth

Default

Quote:
Originally Posted by Flyin_Hayn View Post
Bobby said that the dip up top is almost identical to his other tunes. Says the compressor can't. Keep up with the 2.5liter displacement demands. He said the 2liters will continue to clime because that turbo can supply them easily where as the td05 runs out of breathe up top. He said porting and polishing the heads and larger cams will eliminate that almost completely.

Let me know what you guys think...
So he's telling you that the compressor cant keep up with the massive 2.5L at 17psi.....but at the same time telling you if you get a fmic you can run 20psi at redline......

So you compressor cant keep up at 17psi....but if you add 10 ft of piping and 3psi the compressor gets magically better

And yeah.....it looks like that mbc sucks....i was going to ask how he got it to taper like that
Phatron is offline   Reply With Quote
Old 07-13-2010, 02:30 PM   #21
Flyin_Hayn
Scooby Specialist
 
Member#: 175031
Join Date: Mar 2008
Chapter/Region: NWIC
Location: Sauce Town, OR
Vehicle:
2005 PSM STi
Stage2 303awhp / 331awtq

Default

Yeah that's why I was confused!???

I honestly think this dude gets you a big number and ****s off the rest of the tune.

How do ppl peak @ 23 and hold above 20 to redline
But I can keep boost above 18 to 5500....? Maybe a little heat soak but cmon..
Flyin_Hayn is offline   Reply With Quote
Old 07-13-2010, 02:32 PM   #22
Flyin_Hayn
Scooby Specialist
 
Member#: 175031
Join Date: Mar 2008
Chapter/Region: NWIC
Location: Sauce Town, OR
Vehicle:
2005 PSM STi
Stage2 303awhp / 331awtq

Default

Yeah that's why I was confused!???

I honestly think this dude gets you a big number and ****s off the rest of the tune.

How do ppl peak @ 23 and hold above 20 to redline
But I can keep boost above 18 to 5500....? Maybe a little heat soak but cmon..
Flyin_Hayn is offline   Reply With Quote
Old 07-13-2010, 02:56 PM   #23
Concillian
Scooby Guru
 
Member#: 4414
Join Date: Feb 2001
Location: Dublin, CA
Vehicle:
2002 WRX Sedan
Midnight Black

Default

Quote:
Originally Posted by Flyin_Hayn View Post

All in all I personally believe. The ej257 hybrids aren't all there set out to be without bored out heads or a complete swap.
What are they set out to be?

I mean I thought they came about because 2.0L owners wanted a little more daily driving off-boost grunt than a low compression 2.0L could give. A new 2.5L shortblock is right around the same cost as a rebuilt 2.0L, so when it came time to rebuild, just slap your heads on a 2.5L.

I don't think anyone created the hybrid with expectations it would perform the same as a true EJ255 / EJ257. Some people may have that expectation now, but I don't think it was ever billed that way in the beginning.
Concillian is offline   Reply With Quote
Old 07-13-2010, 02:56 PM   #24
Phatron
Scooby Guru
 
Member#: 36033
Join Date: Apr 2003
Chapter/Region: SCIC
Location: Tuning Lab
Vehicle:
CEO PhatBottiTuning
2006 STi GTX3582 + Meth

Default

get a hallman.....if you want one pm me. im a vendor on here.....
Phatron is offline   Reply With Quote
Old 07-13-2010, 03:24 PM   #25
aiter
Scooby Newbie
 
Member#: 232477
Join Date: Dec 2009
Location: Midwest
Vehicle:
2015 WRX STi

Default

Im having the same problem. My car has the sti block with forged pistons and the stock heads. Im running a green HTA and only made 315 @ the wheels.
aiter 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 07:43 PM.


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