Welcome to the North American Subaru Impreza Owners Club Friday September 4, 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 08-14-2014, 12:17 AM   #1
Ravel36
Scooby Newbie
 
Member#: 116797
Join Date: Jun 2006
Chapter/Region: South East
Location: Sunrise/Ft Lauderdale, Florida
Vehicle:
2004 STi
Silver /w EFR7163

Default 04 STi BW EFR-7163 was 327whp & 321wtq now 339whp & 390wtq

BW EFR 7163 /w medium wastegate actuator

Event: Dyno pull/tuning session
Location: Performance Race Solutions, Sanford, FL.
Ambient Temp: 90
Elevation: approx 100 ft.
Weather: Hot
Wheels/Tires: 235/45/17


Car: 2004 WRX STi
Mileage: 130k on engine
Tuner: Mike @ Mtuned via Performance Race Solutions
Dyno Info: Mustang
Peak HP at RPM: 327whp
Peak Torque at RPM: 321wtq

Target Boost: 19psi
Target AFR: 11.1
Fuel: 93 unleaded
Tranny: 04 STI 6spd
Engine/Power Modifications: Installed by Casey @ Boxer Motorsports, Melbourne, FL. and myself.

2.5l ej257 stock block motor, Perrin Equal Length Header, Full Race catted down pipe and uppipe, Maddad Whisper 3 exhaust, DW 1000cc injectors, APS 65mm/K&N filter, Perrin 3" turbo inlet, Cobb Afta Maf, GrimmSpeed EBCS, Walbro 255lph fuel pump
Software: Cobb



Updated numbers in post 22
* Registered users of the site do not see these ads.

Last edited by Ravel36; 08-22-2014 at 07:47 PM.
Ravel36 is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 08-14-2014, 05:33 PM   #2
sburck
Scooby Specialist
 
Member#: 191491
Join Date: Oct 2008
Chapter/Region: NESIC
Location: Boston, MA
Vehicle:
2011 Forester

Default

I was going to do a very similar setup before I sold my STI, nice numbers.

What intercooler are you using, and do you know what numbers a stock STI puts down on the dyno at that shop?

How is quick does the 7163 spool compared to a stock vf39?

Also, are you planning on going above 19 psi? I know it's a stock block but couldn't you hit 21-23 with relative safety? Were you starting to knock at 19?

Last edited by sburck; 08-14-2014 at 05:42 PM.
sburck is offline   Reply With Quote
Old 08-14-2014, 05:58 PM   #3
Ravel36
Scooby Newbie
 
Member#: 116797
Join Date: Jun 2006
Chapter/Region: South East
Location: Sunrise/Ft Lauderdale, Florida
Vehicle:
2004 STi
Silver /w EFR7163

Default 04 STi BW EFR-7163 327whp & 321wtq

Quote:
Originally Posted by sburck View Post
I was going to do a very similar setup before I sold my STI, nice numbers.

What intercooler are you using, and do you know what numbers a stock STI puts down on the dyno at that shop?

How is quick does the 7163 spool compared to a stock vf39?

Also, are you planning on going above 19 psi? I know it's a stock block but couldn't you hit 21-23 with relative safety? Were you starting to knock at 19?

The power/boost comes on quick when it spools. It spools a bit later in the RPMs than stock, but I am also running the mid pressure wastegate actuator. As for knock, I don't think so. I told the tuner that I didn't want to go above 19 psi. I did get some false knock at least that's what I was told. I am waiting until the block is rebuilt before I go any higher, that is for my own piece of mind.

I didn't think to ask for a stock STi's numbers.
Ravel36 is offline   Reply With Quote
Old 08-14-2014, 08:45 PM   #4
Scuby04STi
Scooby Specialist
 
Member#: 328635
Join Date: Aug 2012
Chapter/Region: NWIC
Location: Portland*
Vehicle:
2004 STi GTX3076R
Rally Blue

Default

When is this making full boost? Looks like it must be late with that torque curve.
Scuby04STi is offline   Reply With Quote
Old 08-14-2014, 09:12 PM   #5
Ravel36
Scooby Newbie
 
Member#: 116797
Join Date: Jun 2006
Chapter/Region: South East
Location: Sunrise/Ft Lauderdale, Florida
Vehicle:
2004 STi
Silver /w EFR7163

Default

yea I think full boost is around the time of full torque. I have been told that the torque curve is the way it is because of the medium boost wastegate actuator that I am using. I don't have the high boost actuator for the turbo installed at this time. I wanted to install the high boost after I was told that it would make a difference with the curve, but i am having trouble convincing my tuner that it is a good idea to install it. He his of the idea that since the car held boost fine there is no need to install the stiffer WG actuator. But Geoff from Full Race was stating that the stiffer wastage will help the turbo perform better on Subarus
Ravel36 is offline   Reply With Quote
Old 08-14-2014, 11:32 PM   #6
sburck
Scooby Specialist
 
Member#: 191491
Join Date: Oct 2008
Chapter/Region: NESIC
Location: Boston, MA
Vehicle:
2011 Forester

Default

Quote:
Originally Posted by Ravel36 View Post
yea I think full boost is around the time of full torque. I have been told that the torque curve is the way it is because of the medium boost wastegate actuator that I am using. I don't have the high boost actuator for the turbo installed at this time. I wanted to install the high boost after I was told that it would make a difference with the curve, but i am having trouble convincing my tuner that it is a good idea to install it. He his of the idea that since the car held boost fine there is no need to install the stiffer WG actuator. But Geoff from Full Race was stating that the stiffer wastage will help the turbo perform better on Subarus
Yeah, I'm not an expert but I know that EFR's aren't extremely common (yet). Not sure how many your tuner has worked with, but I get the sense that these days EFR's are full race's bread and butter. It's just a cheap spring too, definitely worth a try.

I'd like to see how it does with more boost, because so far it looks like a 20g-XT could do something like that. I bet it will come alive when you push it though.
sburck is offline   Reply With Quote
Old 08-15-2014, 12:04 AM   #7
VladiWrX
Scooby Specialist
 
Member#: 145658
Join Date: Apr 2007
Location: NorCal
Vehicle:
On my 5th scoob
and lovin it

Default

I think there's something wrong. Peak torque at almost 5k? And only 320 on 19psi? Maybe you have a leak or something
VladiWrX is offline   Reply With Quote
Old 08-15-2014, 07:47 AM   #8
Ravel36
Scooby Newbie
 
Member#: 116797
Join Date: Jun 2006
Chapter/Region: South East
Location: Sunrise/Ft Lauderdale, Florida
Vehicle:
2004 STi
Silver /w EFR7163

Default

No leaks. The car was tested both from the intake and the exhaust prior to the tune session. This is also a mustang dyno, dynojet numbers would have been higher. I also asked for a conservative tune. As far as the boost at 5k, I think it may be because of the WG solenoid. The stiffer solenoid should make a difference.
Ravel36 is offline   Reply With Quote
Old 08-15-2014, 07:59 AM   #9
Ravel36
Scooby Newbie
 
Member#: 116797
Join Date: Jun 2006
Chapter/Region: South East
Location: Sunrise/Ft Lauderdale, Florida
Vehicle:
2004 STi
Silver /w EFR7163

Default

Quote:
Originally Posted by sburck View Post
Yeah, I'm not an expert but I know that EFR's aren't extremely common (yet). Not sure how many your tuner has worked with, but I get the sense that these days EFR's are full race's bread and butter. It's just a cheap spring too, definitely worth a try.

I'd like to see how it does with more boost, because so far it looks like a 20g-XT could do something like that. I bet it will come alive when you push it though.
I think with more boost it will definitely shine. But it's pretty awesome right now, but I do have concerns with the power curve as it currently sits. With peak torque and power at 5k, I have to really rev it to get the car moving. I think the power could start sooner, but if install the stiffer WG (I have it) I would need a new map... And that's where I'm having problems. The tuner is being sluggish about responding since I started speaking of installing that. He states he is busy with an upcoming race at their shop...
Ravel36 is offline   Reply With Quote
Old 08-15-2014, 11:34 AM   #10
Scuby04STi
Scooby Specialist
 
Member#: 328635
Join Date: Aug 2012
Chapter/Region: NWIC
Location: Portland*
Vehicle:
2004 STi GTX3076R
Rally Blue

Default

Quote:
Originally Posted by Ravel36 View Post
yea I think full boost is around the time of full torque. I have been told that the torque curve is the way it is because of the medium boost wastegate actuator that I am using. I don't have the high boost actuator for the turbo installed at this time. I wanted to install the high boost after I was told that it would make a difference with the curve, but i am having trouble convincing my tuner that it is a good idea to install it. He his of the idea that since the car held boost fine there is no need to install the stiffer WG actuator. But Geoff from Full Race was stating that the stiffer wastage will help the turbo perform better on Subarus
I have only seen these use the high boost actuator thus far so that could easily be the cause of the late boost, I would think this this should be picking up closer to 4k not 5k.

Hope he gets back to you soon, if not at least it should tide you over for a bit. I understand the waiting game, might be for the best with that stock block anyway for now.
Scuby04STi is offline   Reply With Quote
Old 08-15-2014, 01:35 PM   #11
sburck
Scooby Specialist
 
Member#: 191491
Join Date: Oct 2008
Chapter/Region: NESIC
Location: Boston, MA
Vehicle:
2011 Forester

Default

Yeah, not sure if you've taken a look at Perrin's blog article about the 7163:

http://blog.perrinperformance.com/bo...test-and-tune/

Looks like he was able to hit 19psi around 3100 rpm, and 25 by 3300. The avcs from his newer engine might be helping him get boost a bit lower, but I think well under 4k should be possible?
sburck is offline   Reply With Quote
Old 08-15-2014, 01:51 PM   #12
Ravel36
Scooby Newbie
 
Member#: 116797
Join Date: Jun 2006
Chapter/Region: South East
Location: Sunrise/Ft Lauderdale, Florida
Vehicle:
2004 STi
Silver /w EFR7163

Default

Yes that blog post is the prototype version with the .64 a/r. That allowed it to spool up at that low rpm. The newer production i believe has .84 a/r. But I was thinking that it should have gotten to 19 around 4k if not sooner. It may be the tune coupled with the medium WG actuator.
Ravel36 is offline   Reply With Quote
Old 08-15-2014, 04:47 PM   #13
sburck
Scooby Specialist
 
Member#: 191491
Join Date: Oct 2008
Chapter/Region: NESIC
Location: Boston, MA
Vehicle:
2011 Forester

Default

Quote:
Originally Posted by Ravel36 View Post
Yes that blog post is the prototype version with the .64 a/r. That allowed it to spool up at that low rpm. The newer production i believe has .84 a/r. But I was thinking that it should have gotten to 19 around 4k if not sooner. It may be the tune coupled with the medium WG actuator.
Ah, I didn't realize it was a different a/r. It seemed like it was the perfect street turbo with the .63.
sburck is offline   Reply With Quote
Old 08-16-2014, 07:12 PM   #14
Stizoo
Scooby Newbie
 
Member#: 367351
Join Date: Sep 2013
Chapter/Region: NESIC
Location: Lawtown
Vehicle:
2005 wrx sti
blue

Default

very interesting , ill keep a tag on this thread see how far you go. I took a different rout compared to you but seems good at least to me it does, graph wise that is.
Stizoo is offline   Reply With Quote
Old 08-16-2014, 07:24 PM   #15
Ravel36
Scooby Newbie
 
Member#: 116797
Join Date: Jun 2006
Chapter/Region: South East
Location: Sunrise/Ft Lauderdale, Florida
Vehicle:
2004 STi
Silver /w EFR7163

Default 04 STi BW EFR-7163 327whp & 321wtq

Well I'll be installing the high boost actuator this weekend. I'm currently etuning so I'm not sure how quickly I'll have solid numbers to compare. I'll probably use virtual dyno or something because the car won't be back on the dyno for a couple of months at least.
Ravel36 is offline   Reply With Quote
Old 08-16-2014, 07:45 PM   #16
Paul
Scooby Guru
 
Member#: 56203
Join Date: Feb 2004
Chapter/Region: Tri-State
Location: south nj
Vehicle:
00 RSTI Coupe
Twin Scroll 2.5XTR EJ207

Default

Do a VD before and after to see the gains
Paul is offline   Reply With Quote
Old 08-16-2014, 07:48 PM   #17
Ravel36
Scooby Newbie
 
Member#: 116797
Join Date: Jun 2006
Chapter/Region: South East
Location: Sunrise/Ft Lauderdale, Florida
Vehicle:
2004 STi
Silver /w EFR7163

Default

Quote:
Originally Posted by Paul View Post
Do a VD before and after to see the gains

Good idea!
Ravel36 is offline   Reply With Quote
Old 08-19-2014, 09:49 AM   #18
Obababoy
Scooby Specialist
 
Member#: 158888
Join Date: Sep 2007
Chapter/Region: MAIC
Location: Baltimore area
Vehicle:
2011 STi EFR 7163!
07 GT30 WRX sold :/

Default

Im excited for results. I have a 2011 Sti with the same turbo...and actuator...Really wish mine came with the high boost so I dont have to pay another 250 for a retune :/ Let us know!
Obababoy is offline   Reply With Quote
Old 08-19-2014, 10:34 AM   #19
Ravel36
Scooby Newbie
 
Member#: 116797
Join Date: Jun 2006
Chapter/Region: South East
Location: Sunrise/Ft Lauderdale, Florida
Vehicle:
2004 STi
Silver /w EFR7163

Default

Yea tell me about it, I had the high boost and didn't install it. I didn't realize it was such a major difference. But I am already noticing gains in the spool. Simply starting off from a stop, and it builds to 0psi very quickly (WGDC is low, I'm staying out of boost). Before it took much more effort to get the car into boost. Now I just need my tuner to send me an updated map.
Ravel36 is offline   Reply With Quote
Old 08-22-2014, 10:05 AM   #20
02nismokiller
Scooby Specialist
 
Member#: 322963
Join Date: Jun 2012
Location: upstate NY
Vehicle:
04 wrx
psm

Default

Nice numbers bro!!! This is jahaziel by the way from Palm Bay with the silver wrx with the big rotated turbo that's always trying to trick you into getting your tranny hahahaha
02nismokiller is offline   Reply With Quote
Old 08-22-2014, 10:33 AM   #21
Ravel36
Scooby Newbie
 
Member#: 116797
Join Date: Jun 2006
Chapter/Region: South East
Location: Sunrise/Ft Lauderdale, Florida
Vehicle:
2004 STi
Silver /w EFR7163

Default

Lol thanks!
Ravel36 is offline   Reply With Quote
Old 08-22-2014, 07:28 PM   #22
Ravel36
Scooby Newbie
 
Member#: 116797
Join Date: Jun 2006
Chapter/Region: South East
Location: Sunrise/Ft Lauderdale, Florida
Vehicle:
2004 STi
Silver /w EFR7163

Default 04 STi BW EFR-7163 327whp & 321wtq

Updated dyno numbers:


BW EFR 7163 /w high boost wastegate actuator and #3 cylinder spark coil replaced (caused misfiring)

Event: Dyno pull/tuning session
Location: Performance Race Solutions, Sanford, FL.
Ambient Temp: 90
Elevation: approx 100 ft.
Weather: Hot
Wheels/Tires: 235/45/17


Car: 2004 WRX STi
Mileage: 132k on engine
Tuner: Mike @ Mtuned via Performance Race Solutions
Dyno Info: Mustang
Gear: 3rd (didn't do 4th because of heat)
Peak HP at RPM: 339whp
Peak Torque at RPM: 390wtq


Target Boost: 19psi
Target AFR: 11.1
Fuel: 93 unleaded
Tranny: 04 STI 6spd
Engine/Power Modifications: Installed by Casey @ Boxer Motorsports, Melbourne, FL. and myself.
Cobb Software


Last edited by Ravel36; 08-22-2014 at 07:41 PM.
Ravel36 is offline   Reply With Quote
Old 08-23-2014, 12:29 AM   #23
02nismokiller
Scooby Specialist
 
Member#: 322963
Join Date: Jun 2012
Location: upstate NY
Vehicle:
04 wrx
psm

Default

How's the nearly extra 70tq feel? Lol... What was changed from the first dyno graph to this last one?
02nismokiller is offline   Reply With Quote
Old 08-23-2014, 12:41 AM   #24
Ravel36
Scooby Newbie
 
Member#: 116797
Join Date: Jun 2006
Chapter/Region: South East
Location: Sunrise/Ft Lauderdale, Florida
Vehicle:
2004 STi
Silver /w EFR7163

Default

High boost WG actuator and an ignition coil.
Ravel36 is offline   Reply With Quote
Old 08-23-2014, 12:16 PM   #25
dwx
Scooby Guru
 
Member#: 8343
Join Date: Jul 2001
Chapter/Region: MWSOC
Location: Atlanta, GA
Vehicle:
2005 2012 Jeep
2013 DGM BRZ

Default

Certainly a significant difference.
dwx 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 05:33 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.