Welcome to the North American Subaru Impreza Owners Club Tuesday August 14, 2018
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
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 10-28-2009, 04:28 PM   #51
Zephyr
Scooby Specialist
 
Member#: 3362
Join Date: Dec 2000
Location: Central NJ
Vehicle:
2001 I've wired a
Few cars in my day

Default

Quote:
Originally Posted by Ti-Da View Post
I ve done a 04 cnd STI (2.5l) swap into a 99rs

the speedo doesnt work. everythings else its working
its a 3 wire vss , do i need to wire it to the cluster or should it work PnP

thanks
You shouldn't have had to remove anything from your RS to get the cluster to work. Rewire it as though it were stock.
* Registered users of the site do not see these ads.
Zephyr is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 01-05-2010, 09:51 AM   #52
xanVu
Scooby Newbie
 
Member#: 228276
Join Date: Oct 2009
Chapter/Region: BAIC
Vehicle:
2003 2.5L WRX

Default

Amazing thread! Will come in handy later this year
xanVu is offline   Reply With Quote
Old 05-17-2010, 01:41 AM   #53
JoePokah
Scooby Newbie
 
Member#: 154734
Join Date: Jul 2007
Chapter/Region: BAIC
Location: Chico CA
Vehicle:
2013 STI Limited
Dark Grey Metallic

Default

dont know if anyone is still following but i just purchased 98 2.5 rs and am very excited to do a swap. After sifting through a bit of information, i see that 02-05 wrx is listed to fit the 98 2.5 rs. My question then was, if the 02-05 wrx fit, would that mean an 04-05 sti would work for the swap? I would like to do the complete sti swap. I am sorry if i overlooked the info but i put in some time. Thanks for the help guys,

Jeff
JoePokah is offline   Reply With Quote
Old 05-17-2010, 07:08 PM   #54
Brydon
Scooby Specialist
 
Member#: 107569
Join Date: Feb 2006
Chapter/Region: NWIC
Location: Vancouver, WA
Vehicle:
1998 Forester S
SRP

Default

Same idea as all of them. I just didn't write out the wiring. I might do that later tonight if I have a little time.
Brydon is offline   Reply With Quote
Old 05-29-2010, 04:51 PM   #55
Dubstar112
Scooby Specialist
 
Member#: 143149
Join Date: Mar 2007
Chapter/Region: Tri-State
Location: No evo 9, no sti swap wrx
Vehicle:
2006 gmc envoy
stealth

Default

let me rephrase that lol:

The [only] wires I have to move/change/alter are listed explicity in the post related to my swap? Or will there be a mass amount of wires not listed, i understand the fuel pump controll differences and, pretty much just asking about the bulkhead harness.. I can follow instructions, but intuitively I am not electricaly enhanced. I still dont understand about the engine harness though. Do I just separate the wires/plugs going to the engine harness and cut the rest out?

99rs> 02-05 wrx

I dont think it should be that complicated but im having a hard time finding what connectors go where on the 2004 wrx harness. Does anyone know where that picture of the sprawled out harness on a piece of plywood went that had every thing labeled?

Last edited by Dubstar112; 05-29-2010 at 05:11 PM.
Dubstar112 is offline   Reply With Quote
Old 05-29-2010, 08:08 PM   #56
TurboGuyPDX
Scooby Newbie
 
Member#: 170856
Join Date: Feb 2008
Chapter/Region: NWIC
Location: Portland, OR
Vehicle:
1991 SS "the Clone"
TopScoob007+livestrong14

Default

I'm doing the same project right now. This time instead of merging, the customer wanted an entire dash swap! +> than a merge if you don't mind a tiny amount of hole cutting in your firewall and source the wrx dash and hvac components. The fit is much easier in an RS than a legacy when doing a HARNESS Swap with dash components included. Otherwise a merge is just as much tear down with a lot more wiring and splicing. I have an 05 STI bulkhead harness left over and could sell it if that is your power plant choice. (works for '04 to '06 STI IMO)
TurboGuyPDX is offline   Reply With Quote
Old 08-06-2010, 05:47 PM   #57
billydekid87
Scooby Newbie
 
Member#: 156415
Join Date: Aug 2007
Chapter/Region: South East
Location: Tennessee
Vehicle:
2002 Rs
Midnight Blue

Default

Ok, I have a question, Anyone have a conversion for a 2003 wrx swap into a 2002 RS?? Links?
billydekid87 is offline   Reply With Quote
Old 08-06-2010, 08:27 PM   #58
TurboGuyPDX
Scooby Newbie
 
Member#: 170856
Join Date: Feb 2008
Chapter/Region: NWIC
Location: Portland, OR
Vehicle:
1991 SS "the Clone"
TopScoob007+livestrong14

Default

Billy are you planning to run the wrx factory ECU? plus wiring, intake manifold, and longblock? If so consider a harness swap. WRX bulkhead harnesses are cheap and will save you tons of time.
TurboGuyPDX is offline   Reply With Quote
Old 08-10-2010, 09:23 AM   #59
Brydon
Scooby Specialist
 
Member#: 107569
Join Date: Feb 2006
Chapter/Region: NWIC
Location: Vancouver, WA
Vehicle:
1998 Forester S
SRP

Default

Quote:
Originally Posted by TurboGuyPDX View Post
Billy are you planning to run the wrx factory ECU? plus wiring, intake manifold, and longblock? If so consider a harness swap. WRX bulkhead harnesses are cheap and will save you tons of time.
You actually need the entire harness front to back from a 02-05 WRX but yes. Take out all of yours and replace it with the WRX. Now if he wants a STI swap then he will have to merge. The STI merge would basically be the same as a 2000/2001 RS.
Brydon is offline   Reply With Quote
Old 08-11-2010, 03:22 AM   #60
Vegaswarped
Scooby Newbie
 
Member#: 123879
Join Date: Aug 2006
Chapter/Region: NWIC
Location: Portland, Or
Vehicle:
99 2.5RSTi BRP
WCSS Best New School Swap

Default

Quote:
Originally Posted by TurboGuyPDX
I'm doing the same project right now. This time instead of merging, the customer wanted an entire dash swap! +> than a merge if you don't mind a tiny amount of hole cutting in your firewall and source the wrx dash and hvac components. The fit is much easier in an RS than a legacy when doing a HARNESS Swap with dash components included. Otherwise a merge is just as much tear down with a lot more wiring and splicing. I have an 05 STI bulkhead harness left over and could sell it if that is your power plant choice. (works for '04 to '06 STI IMO)
^^ he is talking about my car ^^ When we did my wiring for 2004 WRX 2.0L harness inside 99RS, 90% of wires stayed the same color. about 6% switched color at the connectors. and about 3% was useless to the RS. about 80% of the plugs are the same. the places where there is a problem will be the doors, dash and roof. Doors took some time splicing, the roof takes 3/6 wires from the roof connector, and I used a WRX dash because of the fitiment and problems modifying wires to the RS. Also, everything in the car is 100% functional. If you have any questions PM me, I'll help ya out the best I can.




Vegaswarped is offline   Reply With Quote
Old 12-05-2010, 05:53 PM   #61
perez8608
Scooby Newbie
 
Member#: 249852
Join Date: Jun 2010
Chapter/Region: NESIC
Location: canton ma
Vehicle:
1998 2.5rs
blue ridge pearl

Default

ok guys I just finished my swap of an 05 wrx into a 98 rs. everything works perfectly and the motors runs great. I only have one problem, well I guess its not really a problem more of an annoyance than anything else. I have a dtc that keeps popping up with in two key cycles. The code is a p1446 which is fuel tank pressure control valve circuit low. I looked at both diagrams for the rs and wrx. on the wrx its called an fuel tank internal pressure control valve and runs to ecm connector number b84 pin 23. it doesn't exist on the 98 rs so i had left the wire loose on the connector. so is there a way for me to trick the computer into thinking that its getting the proper voltage/ readings or do I have the code completely erased from the computer when I go to have it tuned.
perez8608 is offline   Reply With Quote
Old 12-06-2010, 12:31 PM   #62
TurboGuyPDX
Scooby Newbie
 
Member#: 170856
Join Date: Feb 2008
Chapter/Region: NWIC
Location: Portland, OR
Vehicle:
1991 SS "the Clone"
TopScoob007+livestrong14

Default

Have your Tuner delete the 1446 DTC. Trust me it's the simplest solution. Sounds like you did a good job with only the one code, NICE!
TurboGuyPDX is offline   Reply With Quote
Old 12-06-2010, 10:27 PM   #63
perez8608
Scooby Newbie
 
Member#: 249852
Join Date: Jun 2010
Chapter/Region: NESIC
Location: canton ma
Vehicle:
1998 2.5rs
blue ridge pearl

Default

yeah thanks. I triple checked my double check before i routed and soldered my wires. it was a pain in the ass and I went home from work on my days off with migranes. but it paid off in the end.
perez8608 is offline   Reply With Quote
Old 04-10-2011, 12:15 PM   #64
perez8608
Scooby Newbie
 
Member#: 249852
Join Date: Jun 2010
Chapter/Region: NESIC
Location: canton ma
Vehicle:
1998 2.5rs
blue ridge pearl

Default

ok so i have another question. i've been driving my 98 rs/05 wrx swap since the beg of dec and have had no issues but one. i went to have the car tuned yesterday but my tuner was looking for the ecu reflash plug that would normaly be on the driver side next to the two green plugs for test mode. its a four wire plug that runs to the ecu I assume. are the two line end checks that go to the obd port suppose to substitute for that plug or does it run directly to the ecu? this is something that i overlooked but should be an easy fix. please any help would be greatly appreciated. if i can find them at the ecu then i can just solder them together and get the car tuned! thanks
perez8608 is offline   Reply With Quote
Old 10-15-2011, 09:00 PM   #65
Jafromwi
Scooby Newbie
 
Member#: 262358
Join Date: Oct 2010
Default

Line End Check 1 B134/10 – (Doesn’t exist on the 1998 RS so you need to Repin the OBDII connector or try switching to a 2002+ OBDII connector.) B84/91 Leads to the OBDII connector but is in the B40/5 needs to be in the B40/6 position

The problem I had when I did this swap for someone was it wouldn't reflash because the above wire had to be moved to not B40/6 by what most diagrams show(can't remember where but i know it was 6 over from the other side or on the bottom row 6 over from a side ). I found the problem by looking at the pins that were in the programmer. It had no pins going to B40/6 but did have one at the other spot.
Jafromwi is offline   Reply With Quote
Old 10-18-2011, 02:39 PM   #66
gregger27
Scooby Newbie
 
Member#: 81119
Join Date: Feb 2005
Location: Toronto, Ontario
Vehicle:
2000 Legacy Gt
pewter?

Default

Looking for wiring for swap of a 2002 Wrx engine into a 2000 Legacy Gt. Is the 2000 Legacy harness similar to the 2000 RS?
gregger27 is offline   Reply With Quote
Old 10-18-2011, 03:01 PM   #67
Brydon
Scooby Specialist
 
Member#: 107569
Join Date: Feb 2006
Chapter/Region: NWIC
Location: Vancouver, WA
Vehicle:
1998 Forester S
SRP

Default

Quote:
Originally Posted by gregger27 View Post
Looking for wiring for swap of a 2002 Wrx engine into a 2000 Legacy Gt. Is the 2000 Legacy harness similar to the 2000 RS?
Yes. I think they are identical.
Brydon is offline   Reply With Quote
Old 10-18-2011, 09:55 PM   #68
PHATsuby
Scooby Guru
 
Member#: 13617
Join Date: Dec 2001
Chapter/Region: MWSOC
Location: MN
Vehicle:
2001 Legacy GT back
to stock is a project too

Default

Quote:
Originally Posted by gregger27 View Post
Looking for wiring for swap of a 2002 Wrx engine into a 2000 Legacy Gt. Is the 2000 Legacy harness similar to the 2000 RS?
PM ten80 and look up his thread in the legacy forum. He did a wrx swap into a BE legacy so he can likely help the most. That being said yes the 2000 RS should be pretty much identical outside of possibly the cluster and a few other items.

Ben
PHATsuby is offline   Reply With Quote
Old 10-21-2011, 01:10 PM   #69
miss2.5
Scooby Newbie
 
Member#: 296798
Join Date: Oct 2011
Location: Houghton, MI
Vehicle:
1999 RS/WRX
White

Default

This is going to be a sweet car! I have a 05 wrx swap in a 99 rs. I'm new to this, but if I can help let me know!
miss2.5 is offline   Reply With Quote
Old 02-12-2015, 02:55 AM   #70
nasiocjunkie
Scooby Specialist
 
Member#: 80864
Join Date: Feb 2005
Chapter/Region: AKIC
Vehicle:
I'll have the tuna.
No crust.

Default

Addition Wiring on the 2002 WRX harness:

Injectors/Ignition needs switched 12volt Power

Anyone have a diagram on how this is accomplished thanks
nasiocjunkie is offline   Reply With Quote
Old 01-19-2016, 08:54 PM   #71
Subaru4you
Scooby Newbie
 
Member#: 432960
Join Date: Oct 2015
Default

Need info on 2007 2.5i to 2007 Sti swap.
Ok so I have an ej257 and engine harness for my swap. But....
I purchased an 05 Sti ECU, immobilizer, ignition and key.
What do I need to do to add the immobilizer? And will the 05 ecu run the 07 engine if I plug in the engine harness to my bulkhead or do I need to re-pin it?
Furthermore. Could I directly wire in sequence the transponder ring w/chip in it, to the immobilizer and directly to the ecu? I can add aftermarket anti theft to detour thiefs. But my theory is this will keep the ecu in start mode without adding wiring to my harness or swapping my dash harness. Then I could add the needed wiring to the ecu or re-pin it and be good to go...🤔

Last edited by Subaru4you; 01-20-2016 at 07:32 AM.
Subaru4you is offline   Reply With Quote
Old 06-24-2018, 04:21 PM   #72
anthony12052
Scooby Specialist
 
Member#: 178973
Join Date: May 2008
Chapter/Region: NWIC
Location: small town oregon
Vehicle:
2000 2.5RS
gray/silver

Default

Fuel Pump Relay Control B134/16 – T’ed to B135/19 (This makes the relay on when the key is on.)
Sensor Ground Joint Connector - Fuel Tank Pressure Sensor Ground (R/Y on RS) - (G/Y on WRX)

i need help with this one.....
135/19 goes to the ground juntion. so you are taking the RS wire which should go to the ecu and putting it to ground?
Doesn't make sense to me
anthony12052 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
2.5i to WRX or STI swap SUBYAWD85 Normally Aspirated Powertrain 47 08-25-2009 06:39 AM
99 RS to WRX or STI dfyzfzx Subaru Conversions 5 07-08-2007 09:29 PM
2001 BRP RS Coupe; Bad Motor; WRX or STI swap cadidate; In PA Tattoo Collector Private Vehicle 'For Sale' Classifieds 27 11-14-2005 05:58 AM
06 WRX or STI??? Help Me srsaccount General Community 7 10-07-2005 12:54 AM
Subaru Nubaru - Considering WRX or STi - Help me decide Jeff Johnston Impreza Forum 15 09-30-2004 07:20 PM

All times are GMT -4. The time now is 01:15 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2018 Axivo Inc.
Copyright ©1999 - 2017, North American Subaru Impreza Owners Club, Inc.