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Old 10-08-2012, 11:51 AM   #4426
Vlad
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These are now 3 coincidences that point to immobilized:
-Shows as V9 non Spec C
-Does crank but not start, does not prime pump
-Does start with USDM

Sorry, but it's very likely immobilized.

I think we may just have found a way of quickly diagnosing this by seeing no check engine light with key on and engine not started.
If others want to confirm or deny this, please do this.

I am considering adding this info to the 207 info thread as "possible"
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Old 10-08-2012, 11:58 AM   #4427
simon021
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Quote:
Originally Posted by Vlad
These are now 3 coincidences that point to immobilized:
-Shows as V9 non Spec C
-Does crank but not start, does not prime pump
-Does start with USDM

Sorry, but it's very likely immobilized.

I think we may just have found a way of quickly diagnosing this by seeing no check engine light with key on and engine not started.
If others want to confirm or deny this, please do this.

I am considering adding this info to the 207 info thread as "possible"
Makes sense to me. Thank you very much for helping shed some light on this.
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Old 10-08-2012, 12:01 PM   #4428
Vlad
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You're welcome.
If you read back a bit in this thread, this is a fenomenon that is starting to show up, others had this problem in the past here.
You can try to contact them and see how they fixed this, how they went about getting an ECU.
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Old 10-08-2012, 12:04 PM   #4429
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I'm going to hope the vendor that sold me the motor will replace it. They have a great reputation on here from what I've seen.
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Old 10-08-2012, 12:08 PM   #4430
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Quote:
Originally Posted by simon021 View Post
[IMG]http://i267.photobucket.com/albums/ii298/kadesullivan/JDMECUV8.jpg[IMG]

This should be a v8 from what I can tell. I had a list of all the ECU numbers and part numbers but now I can't seem to find it.

For those of you that cant see the pictures.

B1 - 22611AJ810
112200-8801 12V

FYI thats a picture before I wired in the AVCS in case anyone was wondering where those wires were. I used the IA Performance kit and it was very quick and easy.
Quote:
Originally Posted by simon021 View Post
Exactly correct.

Usdm ecu - engine starts
Jdm ecu - cranks but does not start. Fuel pump does NOT prime.
I'm 99% sure that B1 is a version 9 ECU, which could have an immobilizer. My swap had the same problem initially and we decided the ecu was either bad or we obviously didn't have the immobilizer or key for it. It started up just fine with a USDM wrx ecu. Luckily the guy we bought the swap from was cool and switched out the ecu with a ver 8 ecu for free.

I was going back through my swap pictures (I used a ver 9 ej207) and I have a picture of the original ecu and it was a B1.
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Old 10-08-2012, 01:04 PM   #4431
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Thanks a bunch for the additional info
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Old 10-08-2012, 02:45 PM   #4432
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So it looks like Robert @ JDM Racing Motors is going to take care of me as expected.

It sounds like it's the same year ECU as the motor, but the motor was a late v8 and the ecu was an early v9. Would that be possible?


He said he's going to swap me for a v7 or v8 ecu and it shouldnt matter which one. That was my impression as well. Arent the spec-c ecus the only ones that are any different in that time period?
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Old 10-08-2012, 03:24 PM   #4433
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Quote:
Originally Posted by simon021 View Post
So it looks like Robert @ JDM Racing Motors is going to take care of me as expected.

It sounds like it's the same year ECU as the motor, but the motor was a late v8 and the ecu was an early v9. Would that be possible?


He said he's going to swap me for a v7 or v8 ecu and it shouldnt matter which one. That was my impression as well. Arent the spec-c ecus the only ones that are any different in that time period?
I met the guy in person.

You guys should see the shop. Jdm'ness everywhere.

The guy KNOWS HIS ****.
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Old 10-08-2012, 03:24 PM   #4434
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The ECU are hardware different.
I have seen that several guys are running V9 engines with V8 ECU, it seems to work with no problems.
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Old 10-08-2012, 03:32 PM   #4435
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Quote:
Originally Posted by WRick

I met the guy in person.

You guys should see the shop. Jdm'ness everywhere.

The guy KNOWS HIS ****.
Well except for sending me a v9 ecu lol. I kid I kid. He's been really great to work with and very helpful throughout the purchase. I would highly recommend JDM Racing Motors for your swap needs :-)
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Old 10-08-2012, 03:41 PM   #4436
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haha I guess

Their shop is tidy and well organized. We honestly have 10 JDM shops on the same street here. It's like a factory outlet haha
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Old 10-08-2012, 03:54 PM   #4437
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He sent me a v7 ecu instead of v8 for my v9 motor.
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Old 10-08-2012, 04:10 PM   #4438
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Quote:
Originally Posted by 25rsti View Post
He sent me a v7 ecu instead of v8 for my v9 motor.
that's actually a good thing lol

now speed density it's ass !!!
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Old 10-08-2012, 05:17 PM   #4439
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Why is it a good thing? I won't have AVCS. :-(
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Old 10-08-2012, 05:26 PM   #4440
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V7 have avcs hun'
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Old 10-08-2012, 05:31 PM   #4441
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Haha sorry I've been dealing with so much, I'm forgetting the easy stuff. BUT wouldn't I be losing "something" due to the v7 and v9 being such different animals??
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Old 10-08-2012, 05:34 PM   #4442
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Dude, in the end :

Ecu : Calculates air, looks at table, injects fuel, hope it doesn't blow up, repeat.

Add alot of complications and shenanigans, and you get power.

I'm pretty sure wiring is identical. Someone else will confirm this though.
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Old 10-08-2012, 07:15 PM   #4443
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If anyone needs to change their ej207 valve cover gaskets... I have a set that I bought but never used.
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Old 10-08-2012, 07:27 PM   #4444
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Quote:
Originally Posted by arco View Post
posts #635 all the way to #653 deal with what I'm trying to do. KingKoopa was the one trying to swap the 207 into an 07 STi.

So for the state of CA, they are far more strict with swaps, smog, etc. Since the new chassis is an 07 STi, it will need to keep a 32 bit ECU to be smog legal from what I've heard. Swapping the entire chassis harness from my wrx and the JDM V8 ECU will not be an option for me anymore then if that is the case. This was not an issue for me with my wrx before because it was also 16 bit. I was able to use the JDM harness and get the Readiness monitors set.

So assuming all of this is correct. I think I will have to...
- keep and use the 07 STi ECU that I have
- pick up an 07 STi engine harness and merge the connections with the 207 harness
- keep the 207 heads but use USDM STi cams and sensors
- pick up a DBW throttle body to mate with the V8 long runner/tgv less manifold

Any thoughts?
Quote:
Are there any other thoughts on my setup? Should I get 07 STi cams or can i get any 04-07 STi cams?

Any extra parts/processes needed?

Arco
I haven't received any replies on here but I've take some insight from other shops and tuners.

What I ended up doing is swapping a set of 07 sti cams and matching sensors because the 07 STi 32 bit ecu will not read the jdm cams. Valve lash has been done after swapping the cams.

I should be trying to start the engine within 2 weeks and I wanted to give it one more shot at getting insight from this thread.

Also would I be able to copy over values of air, fuel, and such from my previous map on the 16 bit jdm V8 ecu to the 32 bit usdm STi ecu? The previous map is a map that I was currently driving on for a while and included most of mods. I am trying to do this just to make a base map to run the car on the road to limp it to get protuned.
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Old 10-08-2012, 09:51 PM   #4445
todeswalzer
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finally getting my swap moving along

engine is in and connected to tranny. got the oil pan and everything up to the turbo installed before dropping it back into the engine bay

the compressor side of the stock location gtx3071r has like 1/8" clearance from the engine block. it looks so small until you go to install it and go through the endless process of massaging it into place.


im getting antsy about finishing this project. havnt had a car since mid july
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Old 10-09-2012, 07:18 AM   #4446
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V8 JDM STi ECU does not have an imobilisor
V8 JDM STi Spec C ECU does not have an imobilisor
V9 JDM STi ECU has an imobilisor
V9 JDM STi Spec C ECU does not have an imobilisor
V10 JDM STi ECU has an imobilisor
V10 JDM STi Spec C ECU has an imobilisor

A V9 JDM STi engine will run using a V7 onwards ECU, just make sure you remap it accordingly.

Changes to the V9 engine included an increase in exhaust valve clearance to 0.35mm, V7/8 use 0.25mm. Cam profile is the same.

V8 onwards has a stronger conrod than V7.

V9 has a cast piston made in the same way as the USDM STi, V7/8 UK spec has a forged piston, JDM Spec has hypercast.

V9 has a charge air temp sensor in the inlet plenum under the throttle housing, which isnt active in the stock map, it becomes active when the ECU is mapped using the GoupN ROM file (which doesnt have active knock enabled so not a good idea to use on pump fuel).

Lots of info is available in the Group N homologation papers for the various models, lots of myths out there about the Spec C, up until the V9, the Spec C was never FIA homologated, and even then it was the JDM STi that was homologated, with the Spec C aditions added later, they always used the JDM STi as the base model for the PWRC rally cars.

Link for FIA Homologation sheets http://www.sti.jp/e/competitor/n_homologation/2005.html

Last edited by johnfelstead; 10-11-2012 at 06:15 PM.
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Old 10-09-2012, 08:51 AM   #4447
todeswalzer
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Wait so you're saying v8 has forged pistons too? As of yet all I've seen over and over again is only v7 has forged pistons
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Old 10-09-2012, 09:12 AM   #4448
simon021
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V8 does not have forged pistons. It has hypereutectic pistons.
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Old 10-09-2012, 09:27 AM   #4449
todeswalzer
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One thing I still need to figure out is how to mount my APS 50/50 bov to the JDM mani. The nub to accept the bolt is not there on the jdm runner. A small issue but an issue nonetheless. Has anyone made a clean solution? I'm thinking of buying a small piece of flat stock aluminum and just bending it as necessary but that won't be as sturdy as the nice beefy APS bracket
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Old 10-09-2012, 09:52 AM   #4450
Vlad
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Quote:
Originally Posted by johnfelstead View Post
V8 JDM STi ECU does not have an imobilisor
V8 JDM STi Spec C ECU does not have an imobilisor
V9 JDM STi ECU has an imobilisor
V9 JDM STi Spec C ECU does not have an imobilisor
V10 JDM STi ECU has an imobilisor
V10 JDM STi Spec C ECU has an imobilisor
Thanks for confirming, this is the info that we have seen so far. In addition the S204, 203 and RA-R have them as well.
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