Welcome to the North American Subaru Impreza Owners Club Saturday August 30, 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 > Subaru Conversions

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 10-27-2008, 08:17 AM   #1
ottawarex
Scooby Newbie
 
Member#: 111248
Join Date: Mar 2006
Chapter/Region: E. Canada
Location: Ottawa, Canada
Vehicle:
2004 WRX
PSM

Default JDM V9 STi Swap into WRX

I have swapped a Version 9 JDM STi motor/drivetrain into a 2004 WRX and have run into a few issues.

After doing the swap, we used a V7 ECU to see if the motor was ok. Motor fired up, but went into a safe mode (IAM 0). Switched to a V8 ECU and IAM stays at 8, but the revs drop to 1300RPM and the car seems to dump a ton of fuel.

I wired up the immobilizer, cluster, integrated unit, and steering column (Didn't wire in the keyless system). The blinking "key" on the cluster disappears when the key is in the on position, suggesting the immobilizer isn't stopping the car from starting. But the fuel pump doesn't turn on.

Also, we noticed that the fuel pump relay wire (which is also connected to ignition) is switched to E5 on the V9 ECU vs E14 on the USDM ECU (or vice versa, don't have my notes with me).

Has anyone else attempted this? There may be more wires that have switched positions on the ECU? My next step is to trace pin for pin on the V9 harness.

Thanks for any suggestions.
* Registered users of the site do not see these ads.
ottawarex is offline   Reply With Quote
Old 10-27-2008, 09:21 AM   #2
Hyper
Scooby Guru
 
Member#: 15822
Join Date: Feb 2002
Location: MOCKBA
Vehicle:
1999 WRB GM6
2.12cc V9 Type RA

Default

can't help you with the immobilizer thing

however as far as the harness goes, it is the same as V8, and so are the ECU pins
the only difference is the neutral position switch which is inverted, which means that you need V9 ECU to make your AVCS work
there are ways around it, but I highly recomend using the proper ECU
Hyper is offline   Reply With Quote
Old 10-27-2008, 09:26 AM   #3
ottawarex
Scooby Newbie
 
Member#: 111248
Join Date: Mar 2006
Chapter/Region: E. Canada
Location: Ottawa, Canada
Vehicle:
2004 WRX
PSM

Default

Thanks Hyper. Is there a way to use the V9 ECU without the immobilizer?
ottawarex is offline   Reply With Quote
Old 10-27-2008, 04:57 PM   #4
Hyper
Scooby Guru
 
Member#: 15822
Join Date: Feb 2002
Location: MOCKBA
Vehicle:
1999 WRB GM6
2.12cc V9 Type RA

Default

I was unaware JDM STI had immobilizers in the first place

what is the ECU id?

also, how do you know you have an actualy V9 driveline?
Hyper is offline   Reply With Quote
Old 10-27-2008, 05:09 PM   #5
ottawarex
Scooby Newbie
 
Member#: 111248
Join Date: Mar 2006
Chapter/Region: E. Canada
Location: Ottawa, Canada
Vehicle:
2004 WRX
PSM

Default

Thanks. The engine code and chassis code both suggest its a 2005 JDM STi.

There is an immobilizer for sure (wired it in) and has the immobilizer key.

I can get the ecu code tomorrow. Any suggestions?

We for sure found 2 extra wires to add that ran from the immobilizer to the ecu and the main fuel pump relay goes to another pin on the JDM harness.

Thanks for the help.

Quote:
Originally Posted by Hyper View Post
I was unaware JDM STI had immobilizers in the first place

what is the ECU id?

also, how do you know you have an actualy V9 driveline?
ottawarex is offline   Reply With Quote
Old 10-27-2008, 07:25 PM   #6
ottawarex
Scooby Newbie
 
Member#: 111248
Join Date: Mar 2006
Chapter/Region: E. Canada
Location: Ottawa, Canada
Vehicle:
2004 WRX
PSM

Default

Here's the info on the strut tower:
GH-GDB
GDB-032815
GDBE4EH ZLC
B20 EJ207DW7CR
51E TY856WB6KA

On the ECU:
22611AJ810
112200-8801

Thanks again.
ottawarex is offline   Reply With Quote
Old 10-28-2008, 04:12 AM   #7
Hyper
Scooby Guru
 
Member#: 15822
Join Date: Feb 2002
Location: MOCKBA
Vehicle:
1999 WRB GM6
2.12cc V9 Type RA

Default

yeah, ecu points to V9

I've never wired immobilized cars so I don't even know what to tell you here... one thing I would try, if you have ALL bits from the car and you swapped them over which carry the immobilizer code (cluster, harness, ecu, key) then I'd dig out USDM wiring diagrams and try to see how the thing is working and trace the extra wires

alternatively, I'd run V8 ECU and change the neutral position switch in the tranny on the older version
you are saying IAM is 8 - what gas are you putting into it? do you have any CELs? is the car pinging?
Hyper is offline   Reply With Quote
Old 10-28-2008, 07:36 AM   #8
ottawarex
Scooby Newbie
 
Member#: 111248
Join Date: Mar 2006
Chapter/Region: E. Canada
Location: Ottawa, Canada
Vehicle:
2004 WRX
PSM

Default

The immobilizer is wired as the 06 USDM STi, except the 2 pins that go to the ECU are in a different location. We traced all the wires physically and with a multimeter to check where they go, and in most cases, removed the wire from end to end, and added it to the USDM harness.

IAM is at 8 meaning the default value on reset. The gas is Canadian 94 octane. There is no pinging, but the car hasn't been driven yet. All this info is when using a V7 ECU with a V8 map on it.

The CEL turned on, but there was no code. When I added a wire from the black engine plug to the ECU, the car runs at a pretty high idle with no CEL until about 5 minutes of idle. At which point revs drop to 1300RPM, IAM shows 8, Injector Duty shows 0%, AirFuel Learning shows 23-24%. The CEL comes on, but again, no code.

I don't have a V8 ECU to try unfortunately. Anything else I can try? Next step is to trace pin for pin!
ottawarex is offline   Reply With Quote
Old 10-28-2008, 09:46 AM   #9
Hyper
Scooby Guru
 
Member#: 15822
Join Date: Feb 2002
Location: MOCKBA
Vehicle:
1999 WRB GM6
2.12cc V9 Type RA

Default

wait... am I reading this right

you have a MY04 USDM WRX, you are dropping there JDM V9 driveline, using USDM harness and V7 ECU with V8 map on it???
Hyper is offline   Reply With Quote
Old 10-28-2008, 10:26 AM   #10
ottawarex
Scooby Newbie
 
Member#: 111248
Join Date: Mar 2006
Chapter/Region: E. Canada
Location: Ottawa, Canada
Vehicle:
2004 WRX
PSM

Default

Thats correct. We have the V9 ECU but it needs the immobilizer.

Currently the V9 ECU is plugged in, but the fuel pump doesn't turn on (yet it does with V7 ECU). Basically looking for diagrams to determine all the pin changes from V7/V8 to V9, as we have already found a few differences.

But to bypass the immobilizer and still use the V9 ECU would be great!
ottawarex is offline   Reply With Quote
Old 10-28-2008, 12:49 PM   #11
silentt
Scooby Specialist
 
Member#: 119995
Join Date: Jul 2006
Chapter/Region: W. Canada
Location: Canadia
Vehicle:
2004 Outback XT
Peachy

Default

Quote:
Originally Posted by ottawarex View Post
Thats correct. We have the V9 ECU but it needs the immobilizer.

Currently the V9 ECU is plugged in, but the fuel pump doesn't turn on (yet it does with V7 ECU). Basically looking for diagrams to determine all the pin changes from V7/V8 to V9, as we have already found a few differences.

But to bypass the immobilizer and still use the V9 ECU would be great!
There is no bypassing of the immobilizer on the USDM cars without repinning for an 04 ECU or using a standalone so I'm willing to bet it's the same for the JDM.
silentt is offline   Reply With Quote
Old 10-28-2008, 02:07 PM   #12
ottawarex
Scooby Newbie
 
Member#: 111248
Join Date: Mar 2006
Chapter/Region: E. Canada
Location: Ottawa, Canada
Vehicle:
2004 WRX
PSM

Default

Thanks silentt. At this point, I believe I have to check each pin on the V9 harness, as there must be more differences with this ECU over the V7/V8 JDM and USDM.
ottawarex is offline   Reply With Quote
Old 10-29-2008, 07:54 AM   #13
ottawarex
Scooby Newbie
 
Member#: 111248
Join Date: Mar 2006
Chapter/Region: E. Canada
Location: Ottawa, Canada
Vehicle:
2004 WRX
PSM

Default

Traced the harness pin for pin again. Only a few wires are added, and 2 wires switch places.

So this must be an immobilizer issue. Since the key blinks on the cluster without the key, and disappears with it, I think it suggests that the key is correct.

2 wires were added from the immobilizer to the ECU. I think that I may have the immobilizer installed incorrectly because other than the 2 wires direct to the ECU, the other wires are piggybacked onto existing wires. I would think the immobilizer should receive a wire and then spit out the appropriate signal rather than just tapping into wires.

Any suggestions about the immobilizer / integrated unit ?
ottawarex 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
Differences between JDM V9 STI, JDM V9 Spec-A/B/C, & JDM V8 Spec-C (Heads)??? nomorem3 Factory 2.0L Turbo Powertrain 16 04-06-2013 08:57 PM
STI SWAP - into wrx FAST HELP!! pit_bike50 Newbies & FAQs 5 10-19-2007 08:55 PM
sti swap into wrx renosubby Factory 2.5L Turbo Powertrain 3 09-02-2007 03:03 PM
JDM LGT Spec B swap into WRX, could using 91 instead of 96 be causing my misfires? wrxfactor Factory 2.0L Turbo Powertrain 7 04-23-2006 08:50 PM
Jdm ej207 swap into wrx is finished. Its crazy. WRXerRacer Subaru Conversions 10 01-03-2005 07:17 PM


All times are GMT -4. The time now is 06:14 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.