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Old 01-28-2013, 06:52 PM   #5526
dr20t
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So you have used the jdm dbw 32 bit ecu, and a 16 bit usdm harness? Avcs?
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Old 01-28-2013, 06:56 PM   #5527
amroof
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And I have 20000 miles on mine since the swap.
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Old 01-28-2013, 07:05 PM   #5528
arco
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Quote:
Originally Posted by dr20t View Post
So you have used the jdm dbw 32 bit ecu, and a 16 bit usdm harness? Avcs?
it is running off of the JDM 207 engine, the conversion from DBC to the USDM wrx manifold and DBW, USDM 07 STi engine harness, and the USDM 07 STi 32 bit ECU. AVCS was kept in tact.
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Old 01-28-2013, 07:23 PM   #5529
WRXt4cy
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Quote:
Originally Posted by arco View Post
The "Impossible swap" has been done!

We have a JDM Ver8 STi engine swapped into the 07 STi with the 32 bit ECU.
- We used USDM 07 STi cams and USDM STi cam sensors along with the 07 STi engine harness

<Snip>
Nice work.

I'm looking forward to seeing you get everything working on this swap.

What did you do for throttle control? Did you adapt the drive-by-wire system from the STi or did you swap to the cable system from the EJ207?

Edit : I think you kind of tried to explain above but I'm still not following how you did the throttle control.
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Old 01-28-2013, 07:37 PM   #5530
arco
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Quote:
Originally Posted by dr20t View Post
it is running off of the JDM 207 engine, the conversion from DBC to the USDM wrx manifold and DBW, USDM 07 STi engine harness, and the USDM 07 STi 32 bit ECU. AVCS was kept in tact.
Quote:
Originally Posted by WRXt4cy View Post
Nice work.

I'm looking forward to seeing you get everything working on this swap.

What did you do for throttle control? Did you adapt the drive-by-wire system from the STi or did you swap to the cable system from the EJ207?

Edit : I think you kind of tried to explain above but I'm still not following how you did the throttle control.
Thank you for the compliment. I mentioned the throttle using the acronyms so that may be why it was skipped over/not understood. I decided to go about the route of keeping the drive by wire (DBW) instead of the drive by cable (DBC).
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Old 01-28-2013, 10:35 PM   #5531
amroof
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You will love your swap. I enjoy mine everyday I get in and step on it. 8500rpm redline is bitchin. If you can get an adaptor plate made to adapt the Dbw throttle body to the jdm mani. It makes up a lot of low end power loss with the Sti mani. Good luck man.
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Old 01-28-2013, 11:16 PM   #5532
arco
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Quote:
Originally Posted by amroof View Post
You will love your swap. I enjoy mine everyday I get in and step on it. 8500rpm redline is bitchin. If you can get an adaptor plate made to adapt the Dbw throttle body to the jdm mani. It makes up a lot of low end power loss with the Sti mani. Good luck man.
I ran it before. I loved it. I ran the VF37 twin scroll and it didn't have top end to make it worth it to run to 8500. I shifted ONLY at 8000. Poor me. lol. I still loved it. I ended up a 20g wheel upgraded VF37 but I haven't had the chance to run it aggressively. I hope that is enough to carry me up there to 8500 with actual power. What turbo are you running?

Did you make an adapter plate or did you buy one? I'm thinking of making one but I'm worried of how it'll look. It'll lose it's "clean" effect.
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Old 01-29-2013, 12:28 AM   #5533
amroof
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I'm running stock vf37 at 24 psi on corn with upgraded waste gate spring. You are right it doesn't hold power up top in higher gears but in lower its holds to about 8200.

I actually had a metal throttle adaptor plate made and welded it on the jdm mani. It looks clean and I welded it so I can rotate my tb. It helps as I'm still on tmic.
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Old 01-29-2013, 12:42 AM   #5534
Fir3Fighter
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Quote:
Originally Posted by amroof View Post
You will love your swap. I enjoy mine everyday I get in and step on it. 8500rpm redline is bitchin. If you can get an adaptor plate made to adapt the Dbw throttle body to the jdm mani. It makes up a lot of low end power loss with the Sti mani. Good luck man.
I so wish i had a ej207.... :'(
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Old 01-29-2013, 12:49 AM   #5535
kpluiten
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Quote:
Originally Posted by arco View Post
I ran it before. I loved it. I ran the VF37 twin scroll and it didn't have top end to make it worth it to run to 8500. I shifted ONLY at 8000. Poor me. lol. I still loved it. I ended up a 20g wheel upgraded VF37 but I haven't had the chance to run it aggressively. I hope that is enough to carry me up there to 8500 with actual power. What turbo are you running?

Did you make an adapter plate or did you buy one? I'm thinking of making one but I'm worried of how it'll look. It'll lose it's "clean" effect.
If you're curious, below is a link to my thread showing my throttle adapter. It looks fairly clean. I can have a second made if you are interested.

http://forums.nasioc.com/forums/show...061849&page=14
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Old 01-29-2013, 11:51 PM   #5536
Nomadgene
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I enjoy reading about these set ups. When my "one owner, purchased new 2002 Bugeye" finally got the dreaded rod knock at 132K HARD miles, I weighed my options and pulled the trigger based on the information I've read from lukeskywrx and Vladd back through the years.

I recently had a 2005 USDM chassis swapped into my bug eye. (Tranny, Brakes and suspension). I chose to go with a version 8 JDM motor and stay with the stock VF37 turbo (for now). Our gas up here is crap 90 octane. I was already using methanol injection (cooling mist kit) with my stock bug eye motor.

We added a grimmspeed 3 port boost solenoid, a big CXracing top mount intercooler, a gates racing timing belt, a killer B oil pick up and a spec stage 3+ clutch during the install. I am running 650cc injectors. I have a cobb cold air intake, grimmspeed intake inlet and a 3' cat back Cobb exhaust. We mated the stock cast iron bell mouth housing to my old stainless steel Cobb down pipe.

While we were at it, I added a dccd pro differential controller, a whiteline anti-lift kit and roll center kit to the suspension mods I already had completed (cobb F&R sways, kartboy end links, group N motor, tranny, rear, differential mounts, as well as the botox kit) I have tein coils on also, car handles like it is on rails.

I picked the car up from my tuner last week and was messing around on 18lbs of boost just to give the car a good shakedown before putting it on the dyno this week. I ran 3 tanks of gas through it…wow, what an animal.

Loving the differences, the higher redline, the quieter engine bay, the change in the exhaust note, the tremendous differences in power & spool time. It is basically an entirely different car.
With our current road conditions, I can light up my studded tires in 4th at will and sometimes 5th.

Amazed at the weapon I now possess. I've won 6 local racing championships in the last 4 years in Rally X, Ice racing and Auto X with my old stage 3 bug eye. The locals know about my build but have no idea what is about to hit them.

Anyone still on the fence about these swaps, get on board the crazy train.

I will report the dyno readings once our work is done. Expecting good things.

Last edited by Nomadgene; 01-30-2013 at 08:07 AM.
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Old 01-30-2013, 07:17 AM   #5537
frozie
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Quote:
Originally Posted by stlnation View Post
hi it sounds like you've ran into a common problem and that is that the ecu that came with your jdm motor is immobilized. the common solution is to purchase a non immobilized ecu. you well probably notice that when you turn the car on you will not hear the fuel pump prime and the motor well not even attempt to turn over.

another solution is to have your key and immobilizer synced to the new ecu. not sure on the cost of this
Quote:
Originally Posted by Clark Turner View Post
What is the code on the top cover of the ECU? If your 05 euro has the Blow by connector, unplug it, It will fault the JDM ecu as it does not use that sensor. Also. If your engine has the charge air temp sensor, Unplug that, The 05 wiring does not route that sensor to the ecu correctly and it will fault the ecu. Some had the sensor and some did not. You state its a spec C, However, Most Spec C's are fake with fake stickers so the import/export people can get more money from you for the engine.

V8's did not have immobilizer, This would be an issue if you had a V9 or later ecu. Showing me what ecu you have will help.

C
Quote:
Originally Posted by lukeskywrx View Post
Off the top of my head the Euro STI uses a different pin for input power on the ECU than the US/JDM cars, If someone happens to have the pinout for the JDM and EDM cars you can get it fixed. I believe you have to swap 2 wires. Since you are getting no CEL I would assume your ECU is not being powered. EDIT: Found it! http://www.romraider.com/forum/viewt...hp?f=15&t=7515


Clark I don't get your insistance on "most" Spec-C motors are fake. Unless there is some conspiracy to go around putting BB vf36s, external oil cooler provisions and the special water pump on regular JDM STI motor. Every spec-C motor I have seen for sale in the past few years from reputable sellers has had the proper parts and credentials.

Yes I am sure a few stupid people have been burned by a bad seller saying it was a spec-C , but there is no reason to be telling people most of them are fake.
Thanks Clark and Lukeskywrx for the replies, much appreciated, especially the pinout diagrams. In my case, I didnt have to import my Spec C motor, the Spec Cs and S-20X cars are available here in Singapore as we have both the Euro and JDM models. As for the immobilizer issue, turns out that my stock Euro ECU is immobilized while the V8 JDM one is not. Anyways, my workshop has managed to get the car to start with the JDM ECU, however, with one side of the AVCS fully advanced and the other seemingly not working. Anyone ever run into a similar situation?
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Old 01-30-2013, 09:41 AM   #5538
D-Rodman
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Yes, it's a common issue that seems to always be a wiring problem. Have them check the wiring.
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Old 01-30-2013, 02:23 PM   #5539
mrxr250rider
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Good to hear nomadgene. I didn't do my Swap so don't appreciate it as much. But I wasn't too impressed when I drove my friends stg 2 06 sti so that's saying something
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Old 01-31-2013, 12:59 PM   #5540
vogun16
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Hey guys,

I just finished my swap and build! I have a V7 with GSC S2 cams and springs for the heads and a twinscroll GT3076 for a turbo. Hopefully I will have it tuned in a week or so after I break everything in. My only issue is tracking down why I have a P1306 cel (OCV open, passenger side) any suggestions? I know this corresponds to the solenoid but I am pretty sure of the wiring.
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Old 01-31-2013, 02:44 PM   #5541
25rsti
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Did you check if the screens were in the solenoid, and if so if they were clogged?
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Old 01-31-2013, 03:11 PM   #5542
mrxr250rider
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Can't wait to hear the numbers on that one
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Old 01-31-2013, 05:58 PM   #5543
Nomadgene
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Old 01-31-2013, 06:49 PM   #5544
vogun16
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Quote:
Originally Posted by 25rsti View Post
Did you check if the screens were in the solenoid, and if so if they were clogged?
I removed the screens when I put the motor back together.
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Old 01-31-2013, 09:47 PM   #5545
Florin1
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Default POINT me in the right direction

I thought I'd post here so I don't start a new thread.
I have an 02 wrx with low compression. I bought a complete JDM V8 motor minus the intake manifold and engine harness. So I will be using my old intake. My questions are:
What all do i need to do, buy, or splice to make the avcs work on my car?
This is what I'm buying
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Old 02-01-2013, 08:51 AM   #5546
25rsti
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Alot! Why are you buying that one? Is it a smoking deal? Most people buy a complete if not near complete motor/kit, including Intake manifold with fuel rails, lines, turbo, manifold, up pipe, downpipe, engine harness and ecu. The way it looks you might be better off buying a different kit as I'm speaking about. Or replace everything your missing on the jdm motor with your existing peices and just run without AVCS.
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Old 02-01-2013, 09:29 AM   #5547
Florin1
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Yup, its a good deal! I need the heads off it. Seller already sold the manifold.
I want to keep the avcs. Would it be easy to go to avcs at a later date if I don't find all that is needed?
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Old 02-01-2013, 09:39 AM   #5548
rdieder
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i hope you have the matching ecu for it. If you don't, I think the old timers in the thread will punch you in the balls
It looks like a big wiring job.
What are you planning to use for turbo and injectors? I also notice you didnt get the ac and ps pump, will your existing ones on your wrx just plug in?
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Old 02-01-2013, 09:50 AM   #5549
kpluiten
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Is this the one with the cracked bellhousing portion on the short block that some guy bought on Craigslist for $200? He made a thread about it a while back.
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Old 02-01-2013, 09:51 AM   #5550
Florin1
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Haha. Yup
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