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Old 03-20-2014, 09:44 PM   #1
flyinzuke912
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Default JDM EJ205 into '05 WRX DBW

So heres the deal...I just purchased a JDM ej205 with avcs to stick in my 05 wrx..as you know the 05 wrx is dbc. The engine I received is dbw. I really want the avcs and plan to get it working with the ecu that came with the engine. What is the fastest route here for overcoming the tb issue...Purchase a pedal? My knowledge on DBW is nil...Thanks in advance
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Old 03-21-2014, 09:09 PM   #2
JoshP
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1. Swap over your intake manifold and wiring..
2. Was there ever an EJ205 with DBW? Not that I know of

Last edited by JoshP; 03-21-2014 at 09:44 PM.
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Old 03-21-2014, 09:28 PM   #3
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Post some more info or pics..
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Old 03-21-2014, 10:55 PM   #4
flyinzuke912
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The person I bought it from "dparco" originally told me (before I purchased) that it was a jdm ej205 out of an '04 WRX with AVCS..Well I just received the engine, ECU, and harness ran the numbers off the ECU and it comes up with Forester XT? Also it has DBW...pita Here is a pic of the ECU and a shot of the engine (sorry about the crappy angle) If there are any pics that you want specifically I will gladly take them. The number on the Bell Housing is B609775 and the stamp under the alternator says EJ20
If I just change out the manifold/wires and use my DBC will the ECU still function properly? I bought this engine because I want the AVCS in order to decrease turbo lag...


Last edited by flyinzuke912; 03-21-2014 at 11:00 PM. Reason: upside down photo
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Old 03-21-2014, 11:02 PM   #5
ToneWrx02
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You dont need to change engine harness and intake manifold. Trust me i know also all you would need to buy is the bulk harness from IA wiring for 200$ get any jdm ecu that runs avcs and yea.
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Old 03-21-2014, 11:52 PM   #6
flyinzuke912
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I know I can get AVCS to work. My concern is with the Drive by Wire that this engine has. My 2005 WRX is Drive by cable. i would gladly keep the drive by cable as long as the ECU would still function properly. Im not sure if the ECU makes any other changes besides throttle position with drive by wire. Does drive by wire place values in other areas as well? If not that would be great

And just to clarify The ECU that I am referencing is the JDM ECU that came with this engine.

Last edited by flyinzuke912; 03-21-2014 at 11:56 PM. Reason: Clarification
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Old 03-22-2014, 08:41 AM   #7
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Well that's really interesting. I would have swapped it over to dbc and used a JDM dbc ecu for it. Do you have the entire DBW harness, or is it cut? Your best option would be swap the whole harness and get the pedal to go with it I guess. I looked at IA's "bulkhead", if its just a dozen wires and terminal pins then I wouldn't waste the money on that. You can get those pins for 50c a piece. AVCS is only like 6 wires and you can re-use tgv wires as you have to delete them. It's very well documented.
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Old 03-22-2014, 10:37 AM   #8
flyinzuke912
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So I guess that means that I can't use DBC with this ECU? Someone knows for sure...I'll have to wait til Monday to call my tuner to see if its something he can manipulate.
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Old 03-22-2014, 11:56 AM   #9
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I think that may be the wrong ECU?? It's hard to find good info, but I found this out-

JDM Forester had 2.0 in 02-03 then went to 2.5 in 04+. Neither of those are DBW though. So according to my research that may actually be the correct DBC ecu that you need.

You're going to need to get in touch with someone who deals a lot with JDM imports and has good knowledge on it.
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Old 03-22-2014, 12:29 PM   #10
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Actually dparco has a ton of knowledge and they post here on nasioc.
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Old 03-22-2014, 01:29 PM   #11
flyinzuke912
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Lmao. That who I bought the engine and ECU from. He told me it was out of a 2004 WRX which would have been DBC but...Surprise! :/
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Old 03-22-2014, 01:36 PM   #12
murrdogg24
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it's quite obvious from the pics it wasn't a dbc engine...did you see the pics first?

i'd like to hear from dparco on this.....
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Old 03-22-2014, 01:38 PM   #13
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just swap over your dbc intake manifold with throttle body and you can keep avcs, it's just 4 wires from the engine harness to the ecu, iaperformance sells the wiring kit.
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Old 03-22-2014, 01:41 PM   #14
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For whatever reason Romraider goes by the internal ecu code, not the part number which is what we're looking at. If you could get the internal code (not sure actual term), then we could figure out exactly what it is for an ecu. Using that part number, all you can find is a bunch of Russian websites.. which I'm sure you found.

Can you read the engine code of the sticker on the lower left cam cover?
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Old 03-22-2014, 01:50 PM   #15
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Well there's a few other DBW EJ205s on ebay, so apparently it's somewhat common. Never knew that.
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Old 03-22-2014, 05:15 PM   #16
flyinzuke912
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Quote:
Originally Posted by murrdogg24 View Post
it's quite obvious from the pics it wasn't a dbc engine...did you see the pics first?

i'd like to hear from dparco on this.....
I saw pics of a different engine. I never thought about the DBW/DBC difference because he told me it was an '04 WRX engine. The picture I posted I took.
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Old 03-22-2014, 05:17 PM   #17
flyinzuke912
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Quote:
Originally Posted by JoshP View Post
For whatever reason Romraider goes by the internal ecu code, not the part number which is what we're looking at. If you could get the internal code (not sure actual term), then we could figure out exactly what it is for an ecu. Using that part number, all you can find is a bunch of Russian websites.. which I'm sure you found.

Can you read the engine code of the sticker on the lower left cam cover?
Unfortunately no. Any knowledge on how I would find the internal code besides hooking it up and using a tactrix etc..Maybe It will actually come down to doing the swap (changing manifolds) and seeing what happens...
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Old 03-22-2014, 05:17 PM   #18
flyinzuke912
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Quote:
Originally Posted by JoshP View Post
Well there's a few other DBW EJ205s on ebay, so apparently it's somewhat common. Never knew that.
Me either
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Old 03-22-2014, 05:20 PM   #19
flyinzuke912
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Quote:
Originally Posted by JoshP View Post
Well that's really interesting. I would have swapped it over to dbc and used a JDM dbc ecu for it. Do you have the entire DBW harness, or is it cut? Your best option would be swap the whole harness and get the pedal to go with it I guess. I looked at IA's "bulkhead", if its just a dozen wires and terminal pins then I wouldn't waste the money on that. You can get those pins for 50c a piece. AVCS is only like 6 wires and you can re-use tgv wires as you have to delete them. It's very well documented.
Im sure I could figure the harness out but that is way too much extra work (I work 6 days a week) Besides...I am NOT a fan of DBW haha
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Old 03-22-2014, 05:27 PM   #20
flyinzuke912
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By the way guys I really appreciate the help...NASIOC is an awesome site! There is a plethora of information here and I've used it many times. Hopefully after I figure this out i'll be able to contribute
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Old 03-26-2014, 12:12 AM   #21
flyinzuke912
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I've figured out that the ECU he sent with the engine is from a 2002 Forester XT...The forester didn't have AVCS until 2004. This engine has to be newer than 2002 though because it has dbw, right? Im beyond frustrated at this point..Why can't people just be straight up. What is a sure sign of AVCS? What can I physically see on the engine?

An extra cam sensor?
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Old 03-26-2014, 04:18 AM   #22
ToneWrx02
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Quote:
Originally Posted by flyinzuke912 View Post
I've figured out that the ECU he sent with the engine is from a 2002 Forester XT...The forester didn't have AVCS until 2004. This engine has to be newer than 2002 though because it has dbw, right? Im beyond frustrated at this point..Why can't people just be straight up. What is a sure sign of AVCS? What can I physically see on the engine?

An extra cam sensor?
Look at the cam valve covers. They will have extra **** and be obvious if it has avcs
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Old 03-26-2014, 07:05 AM   #23
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The picture you posted has avcs. JUst get in touch with dparco again, I believe they sent what you need to run dbc avcs.
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Old 03-31-2014, 10:29 PM   #24
flyinzuke912
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My tuner(s) informed me that it would be impossible for them to tune this ECU but I think I may have found a fix. I am swapping intake manifolds and have purchased a v7 ECU. The swap is scheduled for the 9th-10th. If all goes well this will be my set up:
- JDM EJ205 with AVCS(working)
-V7 ECU
-VF39
-Grimmspead TMIC
-Greddy TBE
-Perrin Inlet
-Perrin ram air
-Perrin lightweight crank pulley
-aluminum overdrive pulleys
-ID 1000cc Injectors
-Walbro 255
-One step colder plugs
-TGV Delete
-Lightweight Flywheel
-Stage 2 Clutch
-Tokico Blues with H&R OE Sport Springs
-Short throw shifter
-Tuned for e85

The car also has a Seibon CWII style carbon fiber hood, Seibon 10mm wider carbon fiber fenders and the rest is painted gunmetal grey. I'll post pictures afterwards.
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Old 03-31-2014, 10:37 PM   #25
alan1592
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I have a 2005 saabaru with a jdm ej205 with avcs. I'm also using the jdm ecu. I'm DBC btw.
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