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Old 01-15-2004, 01:49 AM   #26
LIQUIDSK8S
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Quote:
Originally posted by latinskllz
pay 19.95 for 24hrs and download these dude:

http://techinfo.subaru.com/html/ixSe...mpreza+WRX+STi Subaru STI online service manuals
Thanks, but i dont think those will help, those are for the USDM STI not the JDM STI.

It looks like we have everything we need, and if we run into a few problems ill post the specific question along with a photo. Again thanks for all the help everyone.
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Old 01-15-2004, 02:23 AM   #27
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European wiring and JDM wiring are pretty much 2 different worlds. I salute your mechanic for being brave !

Aside from the ecu pinout diagrams , I can understand your mechanic wanting actual circuit diagrams to see what does what and how it works. If you find V7 circuit diagrams , its pretty much the same for the V8. One of the things you will have to switch is the igniton "on" wire with the "OBD ground" . I have noticed several diagrams list things differently to others.
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Old 01-15-2004, 03:19 AM   #28
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Thanks, ill make a note of that difference. I was told there were a few diff pin outs, now i know one of them . By comparing the v.7 pin outs and the v.8 i should be able to find the other differences.

Also its the USDM harness not the european harness that im using, and its supposed to make things easier. Its just getting it all attached to the engine that you need the info for.

Quick question, on the wrx we have tgv's, from my understanding the STI does not. And the reason i ask this is that the wrx has four little box things, one on each end pipes of the intake manifold where it meets the block. Are these devices the tgv's? And if the sti doesnt use tgv's then its safe to say i dont need to use those wires for anything.
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Old 01-15-2004, 03:31 AM   #29
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I think the sti has the bars but not the plates, and the spec Cs have nothing... Im not sure tho. I have seen it talked about in a few threads.

Also I think Ver.III was talking about the difference between porsche(euro) and jdm wiring.
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Old 01-15-2004, 11:56 AM   #30
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The ONLY thing different between USDM and Verison7/8 STi harnesses is the AVCS wiring. The USDM has TGVs wired in instead.

Everything to get the motor actually running is strictly plug-n-play. The AVCS will take more attention but isn't needed to "get it running".

AVCS consists of 8 wires. 4 positive/4 negative to power the solenoids, and 4 positive/4 negative for the sensors.

Its not rocket science. If you have the pinout, all you need to do is run the corresponding wires from the ECU to the sensors/solenoids and your done. You dont need any harnesses to get it to work. Its just cleaner with harnesses.

The left side of the engine harness is pretty much all sensor stuff, the right side of the engine harness is all power wires. Keep that in mind and it helps out some.

Anyway, goodluck! I just did this myself back in September. Pretty much all by myself.

def
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Old 01-15-2004, 05:05 PM   #31
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Quick question for you. When you did the engine did you use the wrx engine harness and the wrx wiring harness. Also if you did it that way, did you have left over wires when you were done? Im going to post pics in a minute of specific wires we have concerns for.
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Old 01-15-2004, 05:32 PM   #32
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You definitely want to use the WRX wiring harness and the WRX engine harness. If you are not, then you are making an unecessary headache out of the whole thing.
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Old 01-15-2004, 06:10 PM   #33
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Im uploading pics, heres the link to them, i gave numbers to them so if you could let me know if you know what they are i would be extremely grateful.

-John

Pics
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Old 01-16-2004, 08:16 AM   #34
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I used the STi engine harness, and pulled the AVCS plug out of an STi chassis harness. This included the black engine plug and the white ECU plug, I then spliced it back into my WRX harness.

It was a pita.

Looking back, I would have stuck with the WRX harness... not cut ANYTHING, and just hardwired the AVCS. Then the hardest part would be grafting the AVCS wires into the proper pin locations on the White ECU plug.

I am glad I got it working... I am not sure how effective it is... but its neat to have.

Just to note, under full throttle/launching/shifting (ie-dragracing), AVCS is virtually inactive.

(it's also inactive over 6k-6.2k rpm)

def

Last edited by dug-e-fresh; 01-16-2004 at 12:46 PM.
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Old 01-16-2004, 10:39 AM   #35
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You should get your ECU remapped by a ECUTEK Specialist,

I work at Lachute Subaru, I mapped a fews Version 7 and the results are amazing !

Later

Ben
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Old 01-16-2004, 01:12 PM   #36
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Quote:
Pinouts are not a diagram, they are pinouts. They said they could figure it out eventually but that it would take awhile which costs$. Thankyou for the help though, i really do appreciate it. My guy just needed the diagram to confirm what gets eliminated/converted from the wrx harness to make the thing work.

Hmm, should not take more than 5 minutes to find the differences.
JDM 7 and 8 is the same harness. Use your 2002 harness diagram if you need one, and change the what 12 wires around ???? You do not need one for this swap though.............

Have fun,
Mark
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Old 01-16-2004, 05:02 PM   #37
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We know what the pin outs are for etc etc etc that wasnt our problem. Our problem was finding out what we were supposed to do with a few of the wires left over that are not plug and play.

Also in reference to the AVCS, can this be plugged into the the WRX engine harness(there are free pin outs for it) and then just plug that into the wiring harness. What we need to know is, if we do this are there wires in place that run through the firewall to do this. Or do we have to run the wires for the avcs from the engine and run it through the firewall additionally. Were trying to make this as simple as possible.
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Old 01-16-2004, 05:25 PM   #38
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http://www.ds1motorsports.com/AVCS.html

Since you don't have the V7 engine harness you'll have to use some pins on the connectors for the AVCS solenoids and sensors and wire that up seperately. At the minimum you need to run 4 additional wires through the firewall.
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Old 01-16-2004, 11:00 PM   #39
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If you want this to be sanitary, reuse the TGV wires for the AVCS. You'll have to pull them at the ECU connector and relocate them, but that is easier than running whole new wires through the firewall.

I'm not ranting, but you should be happy you have ANY wiring help AT ALL. I get the joy of using an ohmmeter to figure out which wire goes where on the really old, and really strange JDM engines. Then, it's pure glee integrating the engine harness into whatever car is getting the engine. Since there are so many car/engine combos, I don't bother writing down the wire paths. The wire colors change so often it isn't worth the time anyway. So when a shop doesn't have this info for you, it may be because it's not neccessary for them to have it on hand.
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Old 01-17-2004, 01:09 AM   #40
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Quote:
Originally posted by Greg Sharpe
If you want this to be sanitary, reuse the TGV wires for the AVCS. You'll have to pull them at the ECU connector and relocate them, but that is easier than running whole new wires through the firewall.

I'm not ranting, but you should be happy you have ANY wiring help AT ALL. I get the joy of using an ohmmeter to figure out which wire goes where on the really old, and really strange JDM engines. Then, it's pure glee integrating the engine harness into whatever car is getting the engine. Since there are so many car/engine combos, I don't bother writing down the wire paths. The wire colors change so often it isn't worth the time anyway. So when a shop doesn't have this info for you, it may be because it's not neccessary for them to have it on hand.
Im grateful for all the help everyone has been giving me, when i started this i was just stressed out becouse ive been carless for 3 months so ya i was a bit annoyed. But things are looking up.

So i can use the tgv wires, plug them into the avcs, then it will just plug right into the wiring harness?? I thought special wires were needed for the AVCS? If i did it this way, all i do is plug it into the wiring harness with the old tgv connector then find where those wires come out after the fire wall and plug them into the sti ecu? That sounds like the easiest and optimal way.

Again thanks for all the help everyone,

-John
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Old 01-17-2004, 01:11 AM   #41
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I just thought of this also, take the v.8 avcs harness plugs and reuse them, then hardwire those into the old tgv wires from the wrx which then plug right into the wrx wiring harness. Would this be good?
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Old 01-17-2004, 03:59 AM   #42
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Please contact me I will help you and send DIAGRAMS! This is a comunity to help people not make money. I will help with any needs you have. If I don't know the answer to things I have contacts in Australia, England, Japan. Please If anyone needs help doing ANY engine swap please don't hesitate to ask me. Wiring or mechanical related. I have done a lot of swaps over 10 now. I am about to do # 11 and 12. Well good luck to you all! I have been in the wiring world and mechanical world it is not fun. At least you guys ahve diagrams to use and other people that have done these swaps. Imagine being the first or first few. We had nothing! K peace out guys and hope to talk to some of you soon!
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Old 01-17-2004, 01:34 PM   #43
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man this is what i tried to tell you much earlier in the post. you don't need tgvs, just f'ing wire in the 8 or so wires needed for AVCS and go drive the damn car already. you're making it WAY MORE DIFFICULT THAN IT IS.
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Old 01-17-2004, 07:39 PM   #44
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Quote:
Originally posted by spiralsmurf
man this is what i tried to tell you much earlier in the post. you don't need tgvs, just f'ing wire in the 8 or so wires needed for AVCS and go drive the damn car already. you're making it WAY MORE DIFFICULT THAN IT IS.
I realize we dont need the tgv's, what im saying is that i should save time by using the tgv wires to run the avcs. The reason is that the tgv's already have wiring in place that goes through the firewall rather then having to run all new wires.

The question is this though, i have heard that the avcs requires special wires, so would i be able to use the tgv wiring in its place?
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Old 01-17-2004, 09:14 PM   #45
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The TGV system only uses 4 wires. Those are all wired on the driver side plug (grey I believe). With AVCS, if you have the engine harness, the solenoids are wired through that plug. So you can reuse those. The ones you can't reuse and have to run anyways are the AVCS sensor connections. Those you should use shielded wire for.
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Old 01-19-2004, 11:16 PM   #46
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So what I am reading is that it is safe to just unplug the TGV and plug them right into the AVCS selinoids for a perfect fit, then rewire them on the ECU pins? I would not have to modify my stock TGV valves in anyway? Should I remove them if possible? I only got the longblock with my swap. Then run 4 shielded wires to the sensors. Would it be safe to just solder the wires to the pins on the sensors?

Another note, I am waiting for my ECU from Japan right now. Using stock ECU and UTEC now. When I get it can I plug it right in and go drive with no modifications at all, other then setting all fuel to 0 on the UTEC?

I love this thread
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Old 01-20-2004, 01:58 AM   #47
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Basically thats the same thing im trying to get to the bottom of , from what ive read it looks like we can do this no problem. Also i was told the v.7 used 6 wires for the avcs while the new v.8 only uses 4 which would mean the tgv option would work perfectly right .

Fatray- you picked up a v.8 spec c engine, you evil ba$%@ very nice. Whats the difference between the two, all ive been able to find is that the spec c has the vf36 with the titanium rather then the vf37(non titanium). I think the ECU is more aggressive on the spec c also. Now if only we could get our friggin motors in our cars already . Good luck with yours.

-John
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Old 01-20-2004, 08:12 AM   #48
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the cams on the Version 8 Spec C are different too.

Stock STi run 256 duration where the Spec Cs get 258 duration. Supposedly a good bit more lift too.

I have a Version 8 Spec C/Version 7 hybrid motor.

I am running the Version 7 shortblock (all forged internals rather than the Ver 8s hypereutectic pistons) with Version 8 Spec C heads, intake/exhaust manifolds and turbo (VF36 twinscroll).

As for the ECU, with the twinscroll ECUs, down low the timing and fuel values are different to compensate for the quicker spooling turbo... but you get less aggressive AVCS advance due to the more aggressive cams.

def
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Old 01-20-2004, 12:05 PM   #49
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All I got was the V7 spec C longblock. Just got ECU in the mail today from Japan. Part# 22611AG971 Said Toyota all over the box Check out the reciept


I am going to just plug it in right now, do the wiring later.

Quick edit of my credit card account #, hope no one saw that for the 2 minutes it was there.

Last edited by fatray; 01-20-2004 at 12:12 PM.
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Old 01-20-2004, 02:36 PM   #50
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Question it ran

Car ran, but terrible. Felt like I was pulling a large boat, or something slowing me down big time. Just wouldn't rev, sounded normal tho.

Hooked up OBII scanner and Camshaft sensor malfunction on both bank A and B. Also scanner wouldn't work on getting fuel trims or any other fuction
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