Welcome to the North American Subaru Impreza Owners Club Friday March 29, 2024
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > NASIOC Project Cars

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.







* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 10-12-2015, 01:05 AM   #76
SteamSpeed.com
Former Vendor
 
Member#: 339860
Join Date: Dec 2012
Default

Two Steps Backward, One Step Forward

We went from Domino being for the most part buttoned up, to this.



The car was driving great, but we had two problems: OCV codes were thrown, and the ECU wasn't programming with EcuFlash. OCV valves drive the AVCS cam timing system. With the codes, we can't use the variable cam timing that AVCS provides. The programming voltage was frustrating. EcuFlash will not program if the voltage pin 11 is not exactly 12v. We were reading like 11.2v.

What is the solution, take apart the wiring loom and figure it out. That meant taking apart the interior again. First redid all of the splices related to pin 11. The voltage was still low. Then we split open the whole loom. Eventually (after a lot of looking) we found a black wire with a red stripe. Confusingly the wiring diagrams say that it is both supposed to have 12v and also be grounded. Eventually we found that there were two black and red wired in the loom, so one was supposed to have 12v, and the other was supposed to be grounded. We figured out that the loose one was supposed to be grounded. We grounded it, and just like that the ECU programmed! Also, all of the OCV faults were gone too!

SUCCESS!

Now that all of the wiring is fixed, Domino can get a tune. We are very near now to having Domino being a real fully functioning car.

Next up:
- Put the interior back together
- Get a tune
- Do the DCCDpro wiring
- Fix gas tank venting
* Registered users of the site do not see these ads.
SteamSpeed.com is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 10-12-2015, 11:31 AM   #77
420WRX
Scooby Specialist
 
Member#: 27752
Join Date: Oct 2002
Chapter/Region: VIC
Location: Victoria B.C., Can
Vehicle:
2004 WRX+Ver.8 EJ207
Silver

Default

Yeah I get the feeling that a lot of the delays in my EJ207 swap were around the ECU. Not only did they not bolt it down or cleanup some of the stray wiring when I got it back, but they also couldn't flash a replacement ECU that would run in my car and I wasn't willing to keep paying to ship ECUs back n forth to get some missing features added back into my tune.

In the end I lost LC and Valet mode options but don't launch the car and don't let anyone park it, so no big loss.
420WRX is offline   Reply With Quote
Old 10-13-2015, 05:47 PM   #78
SteamSpeed.com
Former Vendor
 
Member#: 339860
Join Date: Dec 2012
Default

The interior is back together, and now we back to where we started! Notice the missing hole in the dashboard? Hopefully I will be getting a EDM glove box from Italy soon.

SteamSpeed.com is offline   Reply With Quote
Old 10-17-2015, 02:02 AM   #79
MY03autoSwagon
Scooby Newbie
 
Member#: 421990
Join Date: May 2015
Chapter/Region: SCIC
Location: Inland Empire
Vehicle:
2003 WRX
midnight black pearl

Cool

Nice job! I'm enjoying watching this build and look forward to the rest of it
MY03autoSwagon is offline   Reply With Quote
Old 10-28-2015, 12:08 AM   #80
SteamSpeed.com
Former Vendor
 
Member#: 339860
Join Date: Dec 2012
Default Domino's Tune at PRE

With the wiring all sorted out, it was time to get a tune. I booked a tune a PRE in Portland. There were a few minor build snags to start: there wasn't enough waste gate preload, and the EBCS vacuum lines were in the wrong order. With those small items, Domino started building power.



But, it was not to last. Shortly thereafter, Domino developed a nasty preturbo exhaust leak. She did make it two 325 WHP on the dyno sheet and was on her way hit the 360-400 WHP range. Note these are uncorrected numbers. The atmosperic correction for the day in Portland was 106.8% if you care about that which means the real number would be about 347 WHP.

By the time I got Domino home, the exhaust manifold gaskets were destroyed, and there were only 2 bolts left keeping it on the motor. We have new OEM bolts which we will apply with some kind of thread sealer next time with new OEM gaskets. I hope that the manifold to up-pipe gasket does not start to leak, because I can't get an OEM one here in the US for the twinscroll manifold.

We also gave PRE an STX 71 for testing a while back, and it actually got tuned that afternoon as well. PRE wanted to do a Steam STX turbo day! The tuner got 370 WHP on the 2015 STI before he stopped. He said there was probably about another 40 WHP left in the turbo, but he did not want to push the customer's stock block past 400 WHP. He told me that he hasn't tuned another turbo that could make that much power on pump gas using a stock style inlet. So, for corrected numbers that would be 395 WHP when he stopped, and potentially 438 WHP with the power left on the table.



SteamSpeed.com is offline   Reply With Quote
Old 11-04-2015, 12:45 PM   #81
SteamSpeed.com
Former Vendor
 
Member#: 339860
Join Date: Dec 2012
Default

I think we figured out where the exhaust leak was. We dropped the exhaust manifold to find this. Those were gaskets from the Kinugawa manifold. They looked good, but were actually garbage. So I guess we know that both oil lines and gaskets leak from Kinugawa. :/ Unsurprisingly the 12 year old OEM gasket between the header and up pipe was a little rusty, but completely fine. I will be replacing all of these gaskets with new OEM gaskets.

SteamSpeed.com is offline   Reply With Quote
Old 11-04-2015, 12:51 PM   #82
SteamSpeed.com
Former Vendor
 
Member#: 339860
Join Date: Dec 2012
Default

Unicorn Mod: Airbag Delete

Not normally seen on this side of the pond, what you see below is the rare LHD "airbag delete" mod. USDM cars came with passenger airbags in their later GC8 cars. EDM (European Domestic Market) cars did not. Instead they had this extra dash glove box.



I was finally able to find a good source for these in Dubai UAE of all places with reasonable prices too.

For your reference, here are the Subaru Europe part numbers:
66120FC511OE - POCKET ASSY (UPR)LHD
66203FC130 - REINF (UPR PKT) L
66203FC120 - REINF (UPR PKT) R


http://opposedforces.com/parts/impre...llustration_6/


Sigh....there was no way around it; you actually have to take the the dash out to remove the airbag brackets and install the pocket. Also, we ended up not using the reinforcement brackets. They have to be riveted onto the back of the box, and I didn't have any rivets on hand that would work. The 8 black screws to the dash seemed like more than enough to keep the box secure though.



Here is the dash back in.



Not pictured, but we wired up the DCCDpro to the JDM v6 STI cluster and removed the airbag error bulb on the cluster since it would always stay because there is no airbag computer or airbags for that mater in this car.
SteamSpeed.com is offline   Reply With Quote
Old 11-06-2015, 04:39 PM   #83
auto-mafia
Scooby Newbie
 
Member#: 433676
Join Date: Nov 2015
Chapter/Region: NWIC
Location: Billings, MT
Vehicle:
2008 Impreza WRX
Silver

Default

Sweet build man. I love the glove box. Maybe they make one for a 2008? Keep up the good work!
auto-mafia is offline   Reply With Quote
Old 11-25-2015, 06:41 AM   #84
blurex33
Scooby Newbie
 
Member#: 400594
Join Date: Sep 2014
Cool

Quote:
Originally Posted by SteamSpeed.com View Post
Here is the front subframe all setup. It has a 2005 USDM STI rack and Whiteline swaybar and tie rod ends.
What front subframe did you use for this? Was it a V7 JDM EJ207 to match your rear subframe?

I am swapping in a V7 EJ207 to a 2000 RS coupe. I have the full V7 driveline with all of the subframes and mounts.

This is a great writeup with awesome pictures! Great work!
blurex33 is offline   Reply With Quote
Old 12-02-2015, 02:35 AM   #85
SteamSpeed.com
Former Vendor
 
Member#: 339860
Join Date: Dec 2012
Default

My turn.

Domino gets a tune. As always, she is a work in progress.

Here is a picture for Domino's first tune at PRE in Portland. It went down maybe 2 months ago now? The end result was the header gaskets blew out. I think it made something like 330 WHP. With atmospheric correction for the day, it was something more like 346 WHP



Since then we fixed her up and finished installing the DCCDpro. Teryn took her back to PRE like a week or so ago to get a retune. We made a bit more progress. This was the final tune result on EJ207. Maybe this is the best we can do on a stock EJ207. It is 2.0l after all, but Erich (PRE's tuner) thought maybe it was being held back by fueling..like the fuel filter needs to be replaced. Honestly I don't know how much of a difference that would make.

The great news is that the motor is super healthy. I think the motor will need more attention though, if we are to make bigger numbers. The turbo can get us there, but the 2.0l isn't flow enough in stock form. Cams would help push the turbo more the tuner said. I think 79mm crank could be in order as well. But, for now, this is where she'll stay. I haven't even really had much of a chance to even drive her in her current state.

Relevant Power Mods:
- Stock Version 8 EJ207 motor (JDM 2003 STI)
- Stock exhaust manifold
- Steam STX 71 Twin Scroll Turbo (59 lbs/min)
- Custom 3" turbo back catless exhaust
- Perrin Big MAF intake
- Custom FMIC with a huge bar and plate core
- TiAL QRJ BOV
- SteamSpeed 3-port EBCS
- ID 1000 top feed injectors
- Walbro 255 lph fuel pump
- Stock fuel rails, etc.

Tune done at PREracing at Portland OR by Erich on 92 octane WA gas.



SteamSpeed.com is offline   Reply With Quote
Old 12-02-2015, 02:36 AM   #86
SteamSpeed.com
Former Vendor
 
Member#: 339860
Join Date: Dec 2012
Default

Quote:
Originally Posted by blurex33 View Post
What front subframe did you use for this? Was it a V7 JDM EJ207 to match your rear subframe?

I am swapping in a V7 EJ207 to a 2000 RS coupe. I have the full V7 driveline with all of the subframes and mounts.

This is a great writeup with awesome pictures! Great work!
I don't know what the front was...sorry. GD though from some year. :/
SteamSpeed.com is offline   Reply With Quote
Old 12-02-2015, 02:36 AM   #87
SteamSpeed.com
Former Vendor
 
Member#: 339860
Join Date: Dec 2012
Default

Quote:
Originally Posted by auto-mafia View Post
Sweet build man. I love the glove box. Maybe they make one for a 2008? Keep up the good work!
Sorry, don't think so.
SteamSpeed.com is offline   Reply With Quote
Old 12-30-2015, 07:15 AM   #88
west_minist
Scooby Specialist
 
Member#: 53451
Join Date: Jan 2004
Location: Caribbean
Vehicle:
2000 JDM Impreza SRX
w/ AVCS Silver

Default

Sam,

You may need to swapped headers out for Perrin EL w/ Up-pipe. We have done more on the EJ207 on the fp 68HTA and Dominator 1.5XTR TS. The power you posted was what we did on just pump gas. All others were on meth/water inj on the FP. But we did it stock headers on the Dominator 1.5XTR TS. The FMIC core was inefficient on the Dom vehicle. http://www.xtremeracingtuning.com/fo...it=ryanf#p1254

http://www.xtremeracingtuning.com/fo...ominator#p1344

http://www.xtremeracingtuning.com/fo...ominator#p1338

I hope to post on the STX-71. We will be using an external wastegate. You can follow it here if you wish - http://www.xtremeracingtuning.com/fo...php?f=40&t=608

Per our discussion, we have to go above the P.R of 2.6. As you stated your compressor graphs R&D was stop there. So we will see how well the STX-71 work over 20psi. Will run it at psi's like I did the Dominator 1.5XTR TS. We may try some pump, pump w/ additive and VP Rallymax Race Gas.

Happy New Year!

Last edited by west_minist; 12-30-2015 at 07:26 AM.
west_minist is offline   Reply With Quote
Old 02-16-2016, 08:42 PM   #89
SteamSpeed.com
Former Vendor
 
Member#: 339860
Join Date: Dec 2012
Default

Filed under the category of two steps back one forward, we have taken apart the rear end again. Why you ask? The gas tank isn't venting. You could fill up 0.1 gallons at the pump before the filler neck fill up such that it would trip the full safety mechanism of the pump. Although not critical to driving the car, it is annoying.

In this write up, the gutted the float that controls the tank venting. I didn't see why it would be required since we swapped the whole STI tank assembly. If anyone can clarify why this is required, it would be great.



Anyway, we took apart everything in the back to get to the tank. For now, we have gutted the float.



SteamSpeed.com is offline   Reply With Quote
Old 06-05-2016, 10:02 AM   #90
jstew1991
Scooby Newbie
 
Member#: 448342
Join Date: Jun 2016
Default hh

Hjjjhghh
jstew1991 is offline   Reply With Quote
Old 07-11-2016, 02:53 AM   #91
Evoballer
Scooby Newbie
 
Member#: 436019
Join Date: Dec 2015
Chapter/Region: RMIC
Location: Colorado Springs
Vehicle:
2018 STi RA #406-500
Peral White

Default

Love this build! Great job!!
Evoballer is offline   Reply With Quote
Old 07-28-2016, 01:59 PM   #92
moscali
Scooby Newbie
 
Member#: 414868
Join Date: Mar 2015
Default

This is what I want to do to a 1st gen Impreza wagon. Nice build!
moscali is offline   Reply With Quote
Old 08-02-2016, 10:42 AM   #93
Artor101
Scooby Newbie
 
Member#: 451514
Join Date: Jul 2016
Location: Milledgeville, Ga
Vehicle:
1998 Impreza 2.5 RS
Black

Arrow

When you did the electrical, and you did the engine swap etc, did you have to do a full wiring harness swap or just replace the ECM and ICM? Cause I'm going through a similar issue with my RS. You also mentioned a newer engine is a older body requires wire splicing. Well, What about a older engine in a newer body? Lastly, how does someone check if they have a compatible chassis? I'm sorry to spam you sick build, really, this is just a newer model of my car, but I have no idea what the previous owners did. I'm gonna leave a URL to my thread. THANKS AND AWESOME BUILD!!!
http://forums.nasioc.com/forums/show...9#post44575209
Artor101 is offline   Reply With Quote
Old 08-03-2016, 01:15 AM   #94
SteamSpeed_Teryn
Scooby Newbie
 
Member#: 449508
Join Date: Jun 2016
Default

Quote:
Originally Posted by Artor101 View Post
When you did the electrical, and you did the engine swap etc, did you have to do a full wiring harness swap or just replace the ECM and ICM? Cause I'm going through a similar issue with my RS. You also mentioned a newer engine is a older body requires wire splicing. Well, What about a older engine in a newer body? Lastly, how does someone check if they have a compatible chassis? I'm sorry to spam you sick build, really, this is just a newer model of my car, but I have no idea what the previous owners did. I'm gonna leave a URL to my thread. THANKS AND AWESOME BUILD!!!
http://forums.nasioc.com/forums/show...9#post44575209
Hey artor. I did a full chassis merge. I took the stock gm6 harness and removed the ecu sections. I did the same with a harness that I knew would be compatible with ecu we were using. In this case it was an ej207 jdm ecu. So the harness I knew to use was from a gd8. I did have to add an avcs harness to make everything fully compatible. I figured out all this by doing lots and lots of research on multiple forums, comparing wiring diagrams, and making notes of different swaps.
SteamSpeed_Teryn is offline   Reply With Quote
Old 08-29-2016, 02:50 PM   #95
roidz
Scooby Newbie
 
Member#: 437690
Join Date: Jan 2016
Chapter/Region: BAIC
Location: NorCAL
Vehicle:
2007 STI Limited
Gray

Default

Quote:
Originally Posted by SteamSpeed.com View Post
Filed under the category of two steps back one forward, we have taken apart the rear end again. Why you ask? The gas tank isn't venting. You could fill up 0.1 gallons at the pump before the filler neck fill up such that it would trip the full safety mechanism of the pump. Although not critical to driving the car, it is annoying.

In this write up, the gutted the float that controls the tank venting. I didn't see why it would be required since we swapped the whole STI tank assembly. If anyone can clarify why this is required, it would be great.



Anyway, we took apart everything in the back to get to the tank. For now, we have gutted the float.



Anyway I can chat with you guys about this swap? I wanna do a V8 ej207 as well in my 2000 coupe and a little info.
roidz is offline   Reply With Quote
Old 08-29-2016, 06:17 PM   #96
Narwhalarmy666
Scooby Newbie
 
Member#: 453555
Join Date: Aug 2016
Default

Great build man. Wish I could do something similar to my bugeye.
Narwhalarmy666 is offline   Reply With Quote
Old 09-01-2016, 01:30 PM   #97
Albryno
Scooby Newbie
 
Member#: 453736
Join Date: Sep 2016
Location: Baton Rouge, LA
Vehicle:
2014 XV
Pearl White

Default

Nice build, keep it up!
Albryno is offline   Reply With Quote
Old 07-19-2017, 02:05 PM   #98
SteamSpeed.com
Former Vendor
 
Member#: 339860
Join Date: Dec 2012
Default Project Domino: A New Turbo And A New Tune

It has been over a year since we've done anything with the old girl.

As a refresher, our 2001 Impreza RS had(power wise):
  • A full version 8 JDM WRX STI swap
  • The the version 8 EJ207 engine is still stock; it didn't seem right break down a perfectly health motor at the time
  • Version 8 STI 6-speed
  • We did the 5×114 conversion from a 07 STI
  • Custom 3***8243; catless turbo back
  • Custom FMIC with a ridiculously large IC core
  • Big MAF intake
  • SteamSpeed silicone inlet
  • ID1000 injectors + a Walbro 255 lph pump
  • SteamSpeed STX 71 JB turbo for JDM STI twin scroll

In that iteration, it made ~360 whp at PRE facility on pump gas. For comparison, the SteamSpeed STX 71 on a 2015 STI made about 420 whp on the same day. With that turbo it was rewarding to push the car, and if you kept the revs up, you could keep it in boost, but realistically it was a 4.5k+ RPM turbo on a stock EJ207.

[Domnio V3]
We wanted to do something a little more responsive. Enter the SteamSpeed STX 67R+ BB turbo for JDM STI.

We would manufacture small batches of this turbo, and we would sell them all out before we could install one in Domino, but we able to finally get one installed. It has the smaller 67mm compressor which should make it more responsive, but the "+" means that it still has a GTX30 spec turbine which is a little better suited for a 2.5l. I think a GTX29 size wheel would be perfect for the EJ207. Next update to the turbo we can make the change. ***55357;***56898;

The STX 67 wheel did get us close to 4k RPM, but it still feels big. In fact, doing pulls, it feels similar to the 71; however, everywhere else, it is night and day. The BB CHRA is super responsive. Going on and off the petal, the turbo is a lot more responsive. It could also be related to the fact that we went to speed density from a MAF based tune.

What is the final result? It made about 10 whp less with a 4 psi more boost. Not a bad trade off.

[Dyno Plot]




[Next Steps]
The turbo still feels a little big. Andy at FTW thought going to a top mount could give back about 500 RPM of spool. It would probably be best for our usage of the car, but for vanity reasons we like having the huge FMIC. We could just go to a 2.5l displacement, but it seems like it goes against the spirit of the ej207 swap.

Where do you think we should take the build next? Let us know what you think.
SteamSpeed.com is offline   Reply With Quote
Old 04-09-2018, 12:17 PM   #99
Ctripp1992
Scooby Newbie
 
Member#: 421164
Join Date: May 2015
Default

nice lookin car
Ctripp1992 is offline   Reply With Quote
Old 05-01-2018, 01:12 PM   #100
CFC1905
Scooby Newbie
 
Member#: 468312
Join Date: May 2017
Chapter/Region: TXIC
Location: Texas
Vehicle:
2015 WRX
Blue

Default

wow, what a lovely build! a fresh coat of paint would really make her shine!
CFC1905 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 01:13 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2024 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.

When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission
Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.