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Old 03-12-2011, 11:54 AM   #1
Jubert39
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Member#: 155598
Join Date: Aug 2007
Chapter/Region: NESIC
Location: Vernon Connecticut
Vehicle:
2004 AW Subaru WRX
JDM v7 STI spec-C

Default Version 7 AVCS in an 04 WRX (FLASHING CEL)

<Whoever figures out my issue and gets my JDM ECU to work with the AVCS, Ill paypal $50.00) Its getting rediculous, this car is pissing me off>
I currently have a v7 spec c in my 04 WRX.
I know the v7s normally came on the bugeyes in Japan. I've recenlty heard that for jdm swaps v7/v8, that you need the IA kit to make AVCS work (unless you custom do it yourself) + JDM ECU.
I got both of those, but according to fellow jdm owners, i also heard that on some 04-05s i need to switch out the neutral position switch and reverse lights to the 02-03 bugeye ones...
there doesnt seem to be much info on this on here... so any fellow swapped people wanna show me what they look like, and how to do this? is it just simple as swapping the NPS and Rev lights to the bugeye version? plug in play?
anyone have more info on this, and how to do this? (i am a "wiretard")

The new issue is: I tried using the Version 7 JDM ecu and the CEL is flashing, so my tuner (STI MIKEY) cant even connect to it to tune... so Im still just running on the USDM 2.0L ECU (without AVCS). Why is this happening? I dont think its a problem with the ECU cus this is the second version 7 ecu I tried and its doing the same thing. Im gonna try a version 8 ecu tmrw as well. It just doesnt make any sense... could it be possibly the wiring for the avcs was just done wrong? afterall, it works fine with the usdm ECU... hmmmm
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Last edited by Jubert39; 03-31-2011 at 12:00 AM.
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Old 03-12-2011, 01:31 PM   #2
kayen
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What transmission do you have? Did you swap it to the 6 speed when you did the engine swap? Subaru changed the polarity of the NPS in the 05+ transmissions, so if your transmission is before that year with the older engine and ECU you shouldn't need to worry about changing your NPS.
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Old 03-12-2011, 02:45 PM   #3
CBELL
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after thinking about the math, i convinced myself this was the case. With 39 teeth on the ring gear, there would have to be 9.48 teeth on the pinion gear to make it a 4.11 ratio, something tells me that wouldnt be correct.
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Old 03-12-2011, 08:20 PM   #4
Jubert39
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JDM v7 STI spec-C

Default

ooops! forgot to mention it was the stock 5 speed... i wish i did the 6 speed swap, but didnt have the extra cash
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Old 03-12-2011, 08:44 PM   #5
fastnoypi
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nothing to see, i'm stock

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its plug and play for the sensors, they are alot easier to get to on the 5sp's.
they almost look like stock lugnuts on the side of your trans with wires sticking out.
Unplug them from the harness and unbolt, replace the sensors.
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Old 03-12-2011, 09:37 PM   #6
Jubert39
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JDM v7 STI spec-C

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Quote:
Originally Posted by fastnoypi View Post
its plug and play for the sensors, they are alot easier to get to on the 5sp's.
they almost look like stock lugnuts on the side of your trans with wires sticking out.
Unplug them from the harness and unbolt, replace the sensors.
hey man, can you post the pics of the parts you are shipping to me?
are u sure its plug in play, cus another member here who has an 04 or 05 wagon has a version 7 swap as well and he said he had to swap the NPS and reverse lights, as well as one other wire????

i guess ill check it out when i see it
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Old 03-12-2011, 10:42 PM   #7
Jubert39
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JDM v7 STI spec-C

Default

NVM! i found it-


anyway, this is all i need right? cus is there another wire I need to do? apprently its not directly swappable between the bugeye and peanut eye... or so ive been told...
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Old 03-12-2011, 11:20 PM   #8
fastnoypi
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nothing to see, i'm stock

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NPS and reverse light sensors are directly swapable back and forth between all year 5 speeds and 6 speeds that i know of. The signal the ecu sees from the sensors is what matters, to make sure you are in gear or not.
There are a handful of things that could cause AVCS not to work. I already mentioned the coolant temp sensor can also be a problem if your avcs is not working.
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Old 03-13-2011, 12:35 AM   #9
Jubert39
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2004 AW Subaru WRX
JDM v7 STI spec-C

Default

Quote:
Originally Posted by fastnoypi View Post
NPS and reverse light sensors are directly swapable back and forth between all year 5 speeds and 6 speeds that i know of. The signal the ecu sees from the sensors is what matters, to make sure you are in gear or not.
There are a handful of things that could cause AVCS not to work. I already mentioned the coolant temp sensor can also be a problem if your avcs is not working.
but the coolant thing is because of an abnormal issue right? if my coolant temp is working 100%, would this still pose a problem?
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Old 03-17-2011, 12:58 AM   #10
Jubert39
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JDM v7 STI spec-C

Default

bump! new question up top
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Old 03-17-2011, 02:57 PM   #11
scoobie_snacks
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Run the V7 ECU
download this:
make the change to the wiring.
good to go.

https://doc-10-14-docsviewer.googleu...641s91v1vps3o7, https://docs.google.com/viewer?a=v&p...ZDM1YWE4&hl=en
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Old 03-17-2011, 04:29 PM   #12
Jubert39
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Join Date: Aug 2007
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2004 AW Subaru WRX
JDM v7 STI spec-C

Default

Quote:
Originally Posted by scoobie_snacks View Post
Run the V7 ECU
download this:
make the change to the wiring.
good to go.

https://doc-10-14-docsviewer.googleu...641s91v1vps3o7, https://docs.google.com/viewer?a=v&p...ZDM1YWE4&hl=en
isnt that just the AVCS wiring? I bought the IA performance AVCS wiring kit, and already hooked that up.
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Old 03-30-2011, 05:27 PM   #13
Jubert39
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2004 AW Subaru WRX
JDM v7 STI spec-C

Default

So now I'm really confused....

I have the IA wiring kit. Ive tried a (2) version 7 ECUs and (1) version 8 ECU and neither helped me. Each ECU gave me the "flashing" check engine light...

Now Ive listened to all the advice-
-IA avcs kit is wired up and working
-the PCV plug (doesnt exist on the JDM motor)... see pic

(I was told to unplug the PCV, but what am I supposed to unplug??? I know what hte PCV looks like, but my motor doesnt have it)

So what are the issues???
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Old 04-06-2011, 04:21 PM   #14
Jubert39
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2004 AW Subaru WRX
JDM v7 STI spec-C

Default

Well I figured it out, with the help of my brother. It wasnt the PCV. they dont exist on the JDM motors as i had suspected.


The IAT plug needs to be unplugged because the JDM measures the temp in the Intake manifold as well, something that is not found on the USDM harness. (they measure temp through the MAF).

For anyone who runs into this problem, hopefully this thread can help... sure wasted about a month of headaches...
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Old 04-06-2011, 04:50 PM   #15
scoobie_snacks
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6 speed

Default

Wow! really? can you take a photo of what plug your talking about? I wired AVCS without a problem maybe it was already disconnected.. please post a photo!!
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Old 04-06-2011, 07:24 PM   #16
Jubert39
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Join Date: Aug 2007
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Vehicle:
2004 AW Subaru WRX
JDM v7 STI spec-C

Default

Its located right underneath the throttle body (the black plug). Disconnect and it cures the flashing CEL. Some ver 7s have this, and all ver 8s have this...

^NOT my pic- stole it from another member...
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Old 04-06-2011, 08:38 PM   #17
Jubert69
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Join Date: Dec 2007
Chapter/Region: Tri-State
Location: CT
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04 WRX
ej207 spec C

Default

Quote:
Originally Posted by Jubert39 View Post
<Whoever figures out my issue and gets my JDM ECU to work with the AVCS, Ill paypal $50.00) Its getting rediculous, this car is pissing me off>
I currently have a v7 spec c in my 04 WRX.
I know the v7s normally came on the bugeyes in Japan. I've recenlty heard that for jdm swaps v7/v8, that you need the IA kit to make AVCS work (unless you custom do it yourself) + JDM ECU.
I got both of those, but according to fellow jdm owners, i also heard that on some 04-05s i need to switch out the neutral position switch and reverse lights to the 02-03 bugeye ones...
there doesnt seem to be much info on this on here... so any fellow swapped people wanna show me what they look like, and how to do this? is it just simple as swapping the NPS and Rev lights to the bugeye version? plug in play?
anyone have more info on this, and how to do this? (i am a "wiretard")

The new issue is: I tried using the Version 7 JDM ecu and the CEL is flashing, so my tuner (STI MIKEY) cant even connect to it to tune... so Im still just running on the USDM 2.0L ECU (without AVCS). Why is this happening? I dont think its a problem with the ECU cus this is the second version 7 ecu I tried and its doing the same thing. Im gonna try a version 8 ecu tmrw as well. It just doesnt make any sense... could it be possibly the wiring for the avcs was just done wrong? afterall, it works fine with the usdm ECU... hmmmm[/b][/color]
Quote:
Originally Posted by Jubert39 View Post
Well I figured it out, with the help of my brother. It wasnt the PCV. they dont exist on the JDM motors as i had suspected.


The IAT plug needs to be unplugged because the JDM measures the temp in the Intake manifold as well, something that is not found on the USDM harness. (they measure temp through the MAF).

For anyone who runs into this problem, hopefully this thread can help... sure wasted about a month of headaches...
Something something... money not in my account
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Old 04-06-2011, 08:58 PM   #18
Jubert39
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Join Date: Aug 2007
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Location: Vernon Connecticut
Vehicle:
2004 AW Subaru WRX
JDM v7 STI spec-C

Default

Quote:
Originally Posted by Jubert69 View Post
Something something... money not in my account

Im pretty sure we just discussed this with the USDM ECU...
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Old 04-06-2011, 09:01 PM   #19
Jubert69
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04 WRX
ej207 spec C

Default

I was kidding jack wagon
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Old 04-07-2011, 12:12 PM   #20
scoobie_snacks
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6 speed

Default

ok yes, thanks. So is everything working now? Do you like the difference with avcs on? Did you reflash your ecu with a 91 octane map yet?
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Old 04-07-2011, 02:33 PM   #21
scoobie_snacks
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6 speed

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lol.. I guess this could of came in handy..haha post #20

http://forums.nasioc.com/forums/show....php?t=1531178
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Old 04-07-2011, 04:24 PM   #22
Jubert39
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2004 AW Subaru WRX
JDM v7 STI spec-C

Default

Quote:
Originally Posted by scoobie_snacks View Post
lol.. I guess this could of came in handy..haha post #20

http://forums.nasioc.com/forums/show....php?t=1531178
that is actually how I found out about it. My brother (jubert69) sent me a link to that...

As for the AVCS, it hasnt been tuned... yet. I will have it tuned next thursday. Then I'll report back... hopefully my car will see some improvement
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Old 04-15-2011, 05:46 AM   #23
Jubert39
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2004 AW Subaru WRX
JDM v7 STI spec-C

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Old 02-21-2014, 11:49 PM   #24
DWUsSubaru
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WRB

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I have an ej207 v7, jdm ecu, + V9 6 spd and i cant get my AVCS to work.

Read this last night, got really excited, dug under the manifold today and.... I dont have anything to unplug down there...

so far i have:
- removed oil screens from solonoids
- inverted NPS since i have a 6spd from a v9
- checked for secondary IAT switch

At first i had no CELs, then after inverting the NPS i get the flashing CEL with code P0390 (Cam sensor bank 2).

AVCS still doesnt work.. Ideas??
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Old Yesterday, 09:10 PM   #25
FreedomShop
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Thanks!

it was the IAT for me!
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