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Old 10-28-2016, 12:52 PM   #10776
GojiraKawasaki
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Quote:
Originally Posted by johnfelstead View Post
There was a change on the V9 between the Spec C and the JDM STI, the ECU on the STI has an inbuilt immobiliser which required the euro spec pin out to be used, the Spec C doesn't, so retains the older JDM wiring.
Thanks johnfelstead. I have a one piece manifold like the Spec C/v8 manifolds but I have a v7 engine. Just wanted to make sure I could get away with using any of the wiring harnesses. So im limited to the v7 and v8 harnesses correct?
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Old 10-28-2016, 03:49 PM   #10777
mrsaturn7085
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Even a USDM STI harness will work with the Spec C manifold... you just need to get creative.

There are more than just two STI harnesses, as well... don't forget about the steel-wheel version w/o AUTO DCCD or ABS. This will not be very common in the used market... but if buying new using factory p/n, you should be very careful.
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Old 10-28-2016, 07:29 PM   #10778
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Quote:
Originally Posted by GojiraKawasaki View Post
Thanks johnfelstead. I have a one piece manifold like the Spec C/v8 manifolds but I have a v7 engine. Just wanted to make sure I could get away with using any of the wiring harnesses. So im limited to the v7 and v8 harnesses correct?
The v7-v8 are the most available so I would just get one of them, no need to make it harder than it needs to be. If you had a extra/free harness around I could understand tring to make that work. The 02-05 USDM WRX engine harness will work but you'd need the AVCS wiring kit like IAP sell.

EDIT: I bet you can use 02-05 JDM AVCS WRX engine harness also without any mods but I'd double check the wiring diagrams
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Old 10-29-2016, 12:26 AM   #10779
GojiraKawasaki
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Quote:
Originally Posted by mrsaturn7085 View Post
Even a USDM STI harness will work with the Spec C manifold... you just need to get creative.

There are more than just two STI harnesses, as well... don't forget about the steel-wheel version w/o AUTO DCCD or ABS. This will not be very common in the used market... but if buying new using factory p/n, you should be very careful.
Thanks Mrsaturn, I'll be sure to verify the part number for the part before making the order.
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Old 10-29-2016, 12:29 AM   #10780
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Quote:
Originally Posted by Paul View Post
The v7-v8 are the most available so I would just get one of them, no need to make it harder than it needs to be. If you had a extra/free harness around I could understand tring to make that work. The 02-05 USDM WRX engine harness will work but you'd need the AVCS wiring kit like IAP sell.

EDIT: I bet you can use 02-05 JDM AVCS WRX engine harness also without any mods but I'd double check the wiring diagrams
Ive have pretty good access to v7 and v8 wiring harnesses so I should be okat with going with one of those. But thanks for the advice. Really appreciate it. Is there a build thread on your car?
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Old 11-04-2016, 01:10 AM   #10781
Timdog82001
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Does anybody know the part numbers for the JDM v7 EJ207 cam seals and crank seals? Having trouble confirming this. Is it the same as the 02-05 USDM wrx?

Last edited by Timdog82001; 11-04-2016 at 02:33 AM.
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Old 11-04-2016, 10:11 AM   #10782
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IA performance sells basically any OEM EJ207 parts that you would need. Give them a call.

I bet cam seals are different for the AVCS cams but I'd assume the crank seal is same as wrx
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Old 11-04-2016, 09:54 PM   #10783
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guys if you wants to check out my ver 10 ej207 GRB build here is the link http://forums.nasioc.com/forums/show...8#post44776418
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Old 11-05-2016, 01:46 PM   #10784
suprabats
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Default EJ207 Owners?

Looking for part replacement help with my v7 207 single scroll vf30 to VF36 twin scroll swap. The VF 36 I bought has no lines with it and want to know if the oil line highlighted in green is the same between the two ? If not what part # or aftermarket oil line is recommended?

I see a part 15192AA011 and 15192AA012 but not sure if these are for a jdm 207 twin scroll or if I can just reuse my vf30

Thank you

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Old 11-05-2016, 06:32 PM   #10785
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I'll just do the whole list; it looks like the oil feed pipe is the only part unique to specific turbos and not just features of the turbo -

The correct VF36 parts are:

15192AA470 - oil feed [green]
15194AA130 - oil feed bolt [blue] - this is the bolt that fits ball bearing turbos
803910050 - oil feed bolt washer (2) [yellow] - same across most motor/turbo combinations
99078AA341 - water hose [yellow] - this is the hose that fits twin-scroll turbos
805918010 - water hose clamp (2) [blue] - same across most motor/turbo combinations

The correct VF37 parts are:

15192AA480 - oil feed [green]
15194AA110 - oil feed bolt [blue] - this is the bolt that fits journal bearing turbos
99078AA341 - water hose [yellow] - this is the hose that fits twin-scroll turbos

The correct VF30 parts are:

15192AA301 - oil feed [green]
15194AA110 - oil feed bolt [blue] - this is the bolt that fits journal bearing turbos
21144AA020 - water hose [yellow] - this is the hose that fits single-scroll turbos

Not to throw a wrench into your plans, but the early (VF30) pipe attached to the motor itself (AVCS/turbo oil feed) differs from the late (VF36/37) pipe...

15192AA312 - AVCS/turbo oil feed hard line (VF30)
15192AA530 - AVCS/turbo oil feed hard line (VF36/37)

The LH side pipe (AVCS feed) is the same between all GD-series EJ207 motors.

If you have the money to do it, a custom stainless line between the factory hard-line and the turbo (replacing 15192AA470) would be a good option. Adding a dry-break in-line would make it even better

15192AA011/15192AA012 are both 1980's parts that I doubt would work... where did you find this part no. reference?

Last edited by mrsaturn7085; 11-05-2016 at 06:52 PM.
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Old 11-05-2016, 06:47 PM   #10786
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Quote:
15192AA011/15192AA012 are both 1980's parts that I doubt would work... where did you find this part no. reference?

Used MY to left on this diagram:
http://opposedforces.com/parts/impre...turbo_charger/

Is there a recommended dealer I can get these parts from in the US, tried to search them out on a couple sites like theautobarnsubaru.com, no luck. Specifically the union bolt 14439AA030 and water line are pulling up foreign sites and forums.

Is this an accurate post?
http://forums.nasioc.com/forums/show...00&postcount=6

Last edited by suprabats; 11-05-2016 at 08:27 PM.
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Old 11-06-2016, 12:41 AM   #10787
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I'm in the process of finishing my project Saabaru and need advice on a check engine light issue. Here is what I've done, swapped a Ver 7 ej207, matching JDM STi ver 7 ECU, avcs wired, Blouch 18g-xtr, deatchwerks 850 injectors, walbro 255 fuel pump, Cobb ebcs 3 port setup, Cobb intake and intake box, Cobb up pipe and turbo back. The issue it's having is that the check engine light is on and pointing to the upstream air fuel sensor. My ecu map running the motor is stock, I'm still not driving the car obviously. I'm wondering if the code is due to the fact that all the aftermarket parts are so incompatible with the stock map or if I truly need a new upstream o2 sensor ? Is it possible that the o2 sensor is working properly but the 850 injectors and aftermarket intake are so off from what it should be when stock that it's triggering the code ? I have no problem buying a new o2 sensor if I truly need it, if so, will the JDM o2 sensor be compatible or the same as a usdm o2 sensor ?
Thank you.
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Old 11-06-2016, 02:08 PM   #10788
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hey guys i know this thread is huge and i just dont have the time on my hands to go through and read and search it to find if someone has already given the answer my question here, but i am having a bear of a time trying to find a downpipe for my JDM EJ207 with VF37 twinscroll turbo. i have seen a few Japanese ones and i just am not comfortable buying on and then finding out it wont fit. the rest of the exhaust has been changed out with a greddy 3'' from the mid-pipe back. just need that downpipe to finish it off. anybody know where i can find one?

i'm not too picky weather it comes to a divorced or not and catted or not. just really in need of a less restrictive downpipe that the rest of the exhaust can use to it full potential.
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Old 11-06-2016, 02:32 PM   #10789
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Old 11-06-2016, 02:59 PM   #10790
mrsaturn7085
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Quote:
Originally Posted by suprabats View Post
Opposed Forces is great for USDM stuff, but once you get into EDM and trying to cross-reference stuff with JDM parts... it falls short.

Here's a few links for future use:

http://www.megazip.net/zapchasti-dly...u/impreza-2161

http://subaru.ilcats.ru/subgroup/mar...group/A/clid/1

The second link may take some fumbling, but the information contained on both sites has been VERY accurate for me in the past.

Quote:
Originally Posted by suprabats View Post
Is there a recommended dealer I can get these parts from in the US, tried to search them out on a couple sites like theautobarnsubaru.com, no luck. Specifically the union bolt 14439AA030 and water line are pulling up foreign sites and forums.

Is this an accurate post?
http://forums.nasioc.com/forums/show...00&postcount=6
I can import parts and have for many members on the forum, but I suggest coming up with a good list before pulling the trigger - the shipping is usually $80-120 regardless of shipping size/weight, and that's just to get it to me. It's not a business for me, just a way to help out, but the prices are often cheaper than other common JDM import sites (especially on STI or GpN parts).
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Old 11-06-2016, 03:11 PM   #10791
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thanks D-Rodman
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Old 11-06-2016, 07:54 PM   #10792
D-Rodman
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You are welcome sir, that is also usdm length, you won't have to extend your intermediate pipe.
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Old 11-09-2016, 01:54 PM   #10793
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If anyone can swallow the $3600 price tag... there is a brand new, in box VF56 (R205 turbo) for sale on eBay:

http://www.ebay.com/itm/IHI-VF56-Tur...-/172299050408

I have no affiliation with the seller... but I would love to see what someone can extract from this turbo.

From the look of it, the VF56 is just a VF53 with a different turbine wheel; which was the same exact difference between the VF36 and VF42; quote from FHI S204 advertisement:

Quote:
"The turbine diameter while larger, was adopted ball bearings to the turbine bearing. Further, by changing the shape and number of the turbine blades, exhibit high output over the entire region from low speed to high speed. How to accelerate smoothly from any rotation region, it was achieved without stress blown-up engine feel up to high rpm."
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Old 11-09-2016, 02:14 PM   #10794
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Quote:
Originally Posted by mrsaturn7085 View Post
If anyone can swallow the $3600 price tag... there is a brand new, in box VF56 (R205 turbo) for sale on eBay:

http://www.ebay.com/itm/IHI-VF56-Tur...-/172299050408

I have no affiliation with the seller... but I would love to see what someone can extract from this turbo.

From the look of it, the VF56 is just a VF53 with a different turbine wheel; which was the same exact difference between the VF36 and VF42; quote from FHI S204 advertisement:
I just don't get why people even bother with VH turbos. I mean 2.0L WRX sure, but on an EJ207, VH turbos are going to be similar power. For much lower price you can get an 16/18g that performs equal to or better.
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Old 11-09-2016, 03:38 PM   #10795
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Quote:
Originally Posted by Jubert69 View Post
I just don't get why people even bother with VH turbos. I mean 2.0L WRX sure, but on an EJ207, VH turbos are going to be similar power. For much lower price you can get an 16/18g that performs equal to or better.
You mean 'VF' (IHI)? Different goals, I suppose. OEM bolt-on compatibility is always nice... regardless of aftermarket companies making OEM housing models, they never just drop-in like a factory IHI turbo will. But you are correct, the CHRA is not going to be all that different between VF-series turbos we are interested in, and the lack of compressor maps is a big downside.

I was curious how much the turbine wheel change would affect the VF56 vs. VF53 so I looked into the ROMs for the 2006 Spec C (VF36) vs. S204 (VF42):

The VF42 starts to spool about 400 RPM later, but then ramps up to peak boost MUCH more quickly - 3200 RPM for the VF42 vs. 4400 RPM for the VF36. With the exception of ~4400 RPM, the VF42 carries about a 2-3 psi increase over the VF36 from 3200-8000 RPM with the fattest gains being in the 5600+ RPM range.

Since the VF36 was made for rally homologation where the flow is choked above ~5000 RPM, this makes perfect sense as to why the VF42 was limited to non-homologation models.

Lastly, the turbine wheel is probably ~75% of the benefit shown in the analysis above - tuning of the AVCS, boost, and wastegate maps is probably where the remainder comes from. It'd be a fun street turbo, but since the VF53 runs around $2200 (USD) new, the eBay auction I listed essentially has you paying $1400 (USD) for a fancy turbine wheel...
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Old 11-09-2016, 05:34 PM   #10796
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Lol yeah oops VF not VH.
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Old 11-10-2016, 01:37 AM   #10797
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Here's my 91 pump gas chart.

http://forums.nasioc.com/forums/show...3#post44786343

I'm scheduled to go back in January for the e85 tune, because the tuner couldn't get the latest Carberry ROM to flash this time around, so I'm on the standard open source ROM.
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Old 11-10-2016, 01:36 PM   #10798
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Quote:
Originally Posted by Fierysun View Post
Here's my 91 pump gas chart.

http://forums.nasioc.com/forums/show...3#post44786343

I'm scheduled to go back in January for the e85 tune, because the tuner couldn't get the latest Carberry ROM to flash this time around, so I'm on the standard open source ROM.
11.0:1 is pretty rich - you've certainly got some headroom there to make more power.
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Old 11-10-2016, 01:55 PM   #10799
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Quote:
Originally Posted by mrsaturn7085 View Post
11.0:1 is pretty rich - you've certainly got some headroom there to make more power.
It's safer to be a little rich (especially at WOT) then risk going lean. The gas in California is not very good (it's formulated for better emissions than the other states) and knocks easily.
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Old 11-10-2016, 02:03 PM   #10800
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on e10 fuel (91, 92, 93 octane, etc) I'd consider 11.0:1 pretty good, as well as any value between 10.5-11.2:1. There should be little, if any power difference along this AFR spectrum. One difference, depenidng on your tuner, could be colder EGTs with a richer AFR in the higher RPMs.

In short, 11.0:1 is not "rich" in my opinion on e0-e10 fuel.

Stephen
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