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Old 01-06-2016, 05:06 PM   #26
Subarujohnny
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Oh yeah, upgrades other then motor...
Blouch 16gxt turbo
650cc injectors
200 fuel pump
perrin el headers
gutted up pipe
catless turboback
Sti tmic
and some others im forgetting
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Old 01-06-2016, 05:46 PM   #27
hail2theTheif
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Interesting the feedback on using an Accessport. I've been talking to many tuners about my ej207 and they have all recommended using the Accessport if I don't mind loosing a it of low end the AVCS would be supporting. My guess is COBB is being diplomatic with their response since they don't officially "support" those motors.
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Old 04-04-2016, 02:05 AM   #28
Nuunchi
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so quick question. How much is the ej205 capabile of? How much boost should I be pushing with my vf23 and how much should I push this motor?
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Old 04-04-2016, 01:11 PM   #29
hail2theTheif
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From my experience having a V7 STi 207 motor tuned on an Accessport and Opensource tune I can tell you the motor is not much fun on the Accessport tune down low or for dailyablilty. If you're tracking the car and mostly using the top end, you will probably be fine.

I daily my swap and the difference was major. I gained power all across the board using the AVCS. Accessport tune was about 212hp/186tq and the Opensource was 258hp/237tq.
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Old 09-26-2018, 07:06 PM   #30
trueno92
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Quote:
Originally Posted by skiblur View Post
ah, good call on the jdm wrx motor. I'm not sure why more people don't get them instead of rebuilding ej205's, considering the price that they go for. The compression is 9:1. They have cast or hypernautic pistons, not forged like the sti v7. I believe the pistons have the same construction as the JDM v8 sti. The heads have avcs, which means a jdm ecu controls them. AVCS is the shiz. You want it. Get a jdm ecu to run them. redline is 7200 on the motor. so you know, avcs will lower spool by 3-500 rpms when tuned. It is a solid motor, and a nice performance bump over the standard WRX motor. Great motor for the stg 4 guys. the comp ratio will be fun. Get a reflash for 93 octane and a vf series turbo and enjoy most of what the STi motor is, without the 8k redline.
Hope this answers some questions. I A performance sells a premade avcs harness. I wired my own and it took about an hour, and I'm not wiring savvy.
you could probably use a jdm sti ecu, somewhere could flash it for you.
good choice on the motor. you should be paying between 16-1900 max for the motor, with low milage.
If I can answer any other questions, let me know.
H.
Really doing the necrobump


RE: AVCS
Does ANYONE have the wiring pinout and what the engine side of the harness looks like?
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Old 09-26-2018, 07:57 PM   #31
subaru_gc8
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nevermind
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Old 09-26-2018, 08:03 PM   #32
snow_bound26
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This is what I used. I bare no responsibility if you screw it up.

https://drive.google.com/file/d/0B4s...jZDM1YWE4/view
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Old 09-26-2018, 09:27 PM   #33
CarmelValleyWRX
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some jdm AVCS 205 come with a TF03 turbo which is super tiny.
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Old 09-27-2018, 11:29 AM   #34
trueno92
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Quote:
Originally Posted by snow_bound26 View Post
This is what I used. I bare no responsibility if you screw it up.

https://drive.google.com/file/d/0B4s...jZDM1YWE4/view
many thanks.

Anyone have much details on the V9 Ej205? no one or no websites really mention it.. looking for injector info...
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Old 09-27-2018, 12:00 PM   #35
snow_bound26
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That's because there is no such thing as a V9 205. Those were loose definitions given to the 207 for enthusiasts to identify a few key differences for the 207 specifically. 205 can be identified as wire on plug w/DBC, coil pack on plug w/DBC or coil pack on plug w/DBW. They came from WRX as well as Forester XT with various turbos depending on the MY or chassis. To identify if it's from a WRX or Forester, look at the coolant crossover pipe. If it points directly at the radiator it's WRX. If it points to the right hand headlight it's Forester. JDM, ADM, and EDM all had different compression ratios to accommodate their local fuel.
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Old 09-27-2018, 01:34 PM   #36
awcforever
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I have a 2004 WRX. I just did the swap for a JDM EJ205. My engine is a high compression NON-AVCS. I spun a rod bearing on the dyno with my USDM 153k miles. So I picked up the JDM 205 from Northern Va. I believe due to the compression difference my tuner (National Speed in Richmond) had to remove about 7deg if timing for it to idle right. Iím running a Blouche 18g turbo, COBB 1050 injectors, Perrin catless downpipe to 3Ē SPT exhaust with a Perring equal length header and up pipe. It runs amazing! I hit 324hp and 305TQ. Running COBB Accessport V3.

The only things I modified was swapping oil pan, oil pickup, coolant/oil lines to turbo, cam/crank sprockets/sensors, I swapped the knock sensor just cuz. I was able to use the coolant lines it came with. they tell you to swap them but just an upper radiator hose from my Legacy parts car was required for the tighter bend, and honestly I like the heater core lines running abover the trans more than off by the steering shaft. Iím sure thereís a couple other little odds and ends but it was a straight forward project.

Just FYI....the return pipe for the turbo I believe coolant line is pressed in the head. I stuck a large screwdriver wrapped in tape through the line and pulled and twisted until it came free. Reinstallation wasnít bad.
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Old 12-27-2018, 12:17 AM   #37
yoashtrey
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Quote:
Originally Posted by awcforever View Post
I have a 2004 WRX. I just did the swap for a JDM EJ205. My engine is a high compression NON-AVCS. I spun a rod bearing on the dyno with my USDM 153k miles. So I picked up the JDM 205 from Northern Va. I believe due to the compression difference my tuner (National Speed in Richmond) had to remove about 7deg if timing for it to idle right. Iím running a Blouche 18g turbo, COBB 1050 injectors, Perrin catless downpipe to 3Ē SPT exhaust with a Perring equal length header and up pipe. It runs amazing! I hit 324hp and 305TQ. Running COBB Accessport V3.

The only things I modified was swapping oil pan, oil pickup, coolant/oil lines to turbo, cam/crank sprockets/sensors, I swapped the knock sensor just cuz. I was able to use the coolant lines it came with. they tell you to swap them but just an upper radiator hose from my Legacy parts car was required for the tighter bend, and honestly I like the heater core lines running abover the trans more than off by the steering shaft. Iím sure thereís a couple other little odds and ends but it was a straight forward project.

Just FYI....the return pipe for the turbo I believe coolant line is pressed in the head. I stuck a large screwdriver wrapped in tape through the line and pulled and twisted until it came free. Reinstallation wasnít bad.
So you werenít able to find a map from Cobb to use after you swapped in the JDM EJ205? I just bought one without AVCS, I understand I need to swap the parts you mentioned but can I just tune it through the Cobb AP or is a protune/opensource tune required because of the higher compression ratio?
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Old 12-27-2018, 12:44 AM   #38
CarmelValleyWRX
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i doubt there is an "off the shelf tune" for the JDM ej205. you can tune the USDM ecu using your accessport though. you will need to custom tune it. if you have a JDM ECU you need open source tuning.
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Old 11-05-2019, 08:41 PM   #39
Daymonslegacy
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Hey so new to the forum I bought a jdm ej205 and plan on using a standalone ecu I plan on using the AVCS now could someone tell me what all I need to make it run I hear about the cam and crank sensors need to be switched to USDM ones does and body know where I can find the intake wiring harness to ecu pin outs

Thanks for the help
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Old 11-06-2019, 02:47 AM   #40
D-Rodman
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Given the fact that you state you want enabled avcs all you would need is to wire it.
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Old 11-06-2019, 02:08 PM   #41
snow_bound26
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Why do you want a stand-alone ecu? Is this going to be strictly a race car? If not and you're not planning on pushing a bazillion HP then it's not necessary. Just get the appropriate JDM ecu.
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