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07-06-2022, 02:13 AM | #1426 |
Scooby Specialist
Member#: 110078
Join Date: Mar 2006
Location: Long Island N.Y.
Vehicle:02 Bugeye JDM STi OBP BLACK |
Ver 8 or ver 9 are not different to implement on your vehicle compared to a ver 7. You already know about the immobilized ecu issue, the major difference is the twin scroll turbo and having to buy a twin scroll specific down pipe, usdm length so you can hook up to your catback without having to lengthen your intermediate pipe
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07-09-2022, 02:46 PM | #1427 | |
Scooby Specialist
Member#: 306719
Join Date: Jan 2012
Chapter/Region:
MWSOC
Location: Troy ,Michigan
Vehicle:2003 Sti Wagon @jn_garage |
Quote:
Its a hodge podge of parts but its effectively a complete V9 swap now with 5x114 and a V7 Spec C gearbox. We had to use a Version 8 ecu but it was flashed with a modified S204 map with a good amount of timing taken out of it that I ran until going flex fuel in 2019. Twin scroll is totally worth it and its a newer engine so that is why I made that choice |
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08-03-2022, 11:56 PM | #1428 |
Scooby Newbie
Member#: 530559
Join Date: Jun 2022
Chapter/Region:
RMIC
Location: Grew up in Missoula, MT
Vehicle:2002 WRX Wagon WRB |
Gasket Refresh
Recommendations for any additional gaskets to replace while the engine is out?
Planning on installing IAG AOS and Killer B oil pan, pickup, and baffle. Current Part List: - head to exhaust manifold gasket 2x 14038AA000 - downpipe to midpipe gasket 1x 44616AA200 - valve cover gasket left 1x 13272AA075 - valve cover gasket right 1x 13270AA152 - valve rocker gaskets 4x 13293AA051 - wash-rocker covers 16x 13271AA071 - AVCS o-ring 1x 806939040 - exhaust donut 1x 44022AA123 - main rear oil seal 1x 806786040 planning on using the IAG Red Racing Timing Belt (stronger belt for higher RPMs), using the Aisin water pump and gasket, and subaru OEM thermostat and gasket. |
08-08-2022, 09:49 PM | #1429 |
Scooby Newbie
Member#: 528517
Join Date: Jan 2022
Vehicle:2004 WRX Wagon Silver |
Tuning question
Hey everyone, sorry if this is a newb question, but I'm in the process of swapping a V7 EJ207 into my 2004 WRX, and everything I've found has said it's not safe to run the engine too much without a proper tune, even if I have the proper JDM ECU for the engine (people citing incorrect timing and/or compression). My question is why wouldn't the correct ECU be able to safely run the engine without a tune, exactly? I plan to get a tune regardless, but I'm still weighing my options, and am also academically curious.
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08-08-2022, 10:02 PM | #1430 | |
Scooby Specialist
Member#: 110078
Join Date: Mar 2006
Location: Long Island N.Y.
Vehicle:02 Bugeye JDM STi OBP BLACK |
Quote:
Make sure the rom is correct for the particular engine. The reason to stay out of boost would be that the fuel octane in your area might be lower than what was in the original market the tune is for. Sent from my iPhone using NASIOC |
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08-09-2022, 06:45 PM | #1431 |
Scooby Newbie
Member#: 530997
Join Date: Aug 2022
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hi guys, Idk if this was asked already, but do you guys think that if the car was set up for an EJ20x that this motor would work in a similar way?
It's a 2004 Impreza STI with an ej20x intake AVCS only with exhaust AVCS disconnected. |
08-10-2022, 07:17 AM | #1432 | |
Scooby Specialist
Member#: 110078
Join Date: Mar 2006
Location: Long Island N.Y.
Vehicle:02 Bugeye JDM STi OBP BLACK |
EJ207 Info
Quote:
Your writing is not very good but I think I understand what you are asking. However, there is important information about your car that is not been provided. You are also asking in the wrong forum but I’ll try to help you. Answer would be a no. Sent from my iPhone using NASIOC |
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08-14-2022, 06:52 AM | #1433 |
Scooby Newbie
Member#: 528517
Join Date: Jan 2022
Vehicle:2004 WRX Wagon Silver |
Wiring/plugs/starting engine help
So I've installed a V7 EJ207 and JDM ECU into my 2004 WRX, and everything seems to be connected and attached properly, though the engine is not starting. It will crank fine and sputter a little like it wants to start but that's it. The engine did not come with a wiring harness and everything I've seen says the WRX wiring harness should work just fine. However, I have noticed that there is a large plug just behind the airbox which has far more wires feeding into the engine than are attached to it on the harness side (relevant photo attached), and am wondering if this could be my problem? Also, there is another plug just beneath that one that on the old engine connected to the uppipe for what I assumed was the cat, which the 207 does not have as far as I am aware. I also haven't connected the wiring for AVCS yet, perhaps it's as simple as the JDM ECU won't allow it to start without that? Any help would be greatly appreciated.
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08-14-2022, 08:00 AM | #1434 |
Scooby Specialist
Member#: 110078
Join Date: Mar 2006
Location: Long Island N.Y.
Vehicle:02 Bugeye JDM STi OBP BLACK |
It may be as simple as the neutral position switch that is preventing it from starting. Check the early pages documentation for tips.
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08-14-2022, 06:49 PM | #1435 |
Scooby Newbie
Member#: 528517
Join Date: Jan 2022
Vehicle:2004 WRX Wagon Silver |
Thanks for the reply. If that were the case wouldn't the car just not crank as if I hadn't pushed the clutch in? Or am I mistaken?
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08-14-2022, 10:43 PM | #1436 | |
Scooby Newbie
Member#: 530118
Join Date: May 2022
Vehicle:2004 Impreza WRX |
Quote:
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09-15-2022, 09:14 PM | #1437 |
Scooby Newbie
Member#: 528517
Join Date: Jan 2022
Vehicle:2004 WRX Wagon Silver |
Update/Engine still not starting
Thanks to everyone who's replied thus far, I took your advice to ensure everything suggested was in check, and unfortunately, could not discover the issue. I went on vacation for a while and now I'm back to trying to get my car to start.
At this point I have installed the IATuning AVCS Bulkhead Wiring Kit, which I had high hopes would solve my problem because the kit includes wiring that communicates with the cam position sensors in the v7 EJ207. However, upon cranking the engine I have the same result as before. I decided to test the engine for spark and indeed there is none, which I assume to be because either some sensor is preventing the engine from getting spark, or there is some electrical/wiring issue causing the coils not to get any electrical charge. I replaced the spark plugs anyways to no avail, since I had ordered new ones and they finally came in. Plugging my OBDII scanner in after an attempted start yielded no results with the EJ207 ECU, however I decided to try it with the USDM 04 WRX ECU, and the following codes appeared: P1094, P1096, P1086, and P1088, all with the caption "Manufacturer control" listed below. I'm wondering if these are being caused simply by the USDM ECU not recognizing the sensors in the ej207, or if there could actually be an issue with the wiring to these components. I've also checked and double-checked all the relevant fuses. My hope is that it's something stupid I missed that I'll be able to fix without having to purchase and install an all new engine harness and wiring. Any and all advice is appreciated. If I forgot to add any details or information to this I'll post another comment later. Thanks! |
09-15-2022, 11:11 PM | #1438 |
Scooby Specialist
Member#: 110078
Join Date: Mar 2006
Location: Long Island N.Y.
Vehicle:02 Bugeye JDM STi OBP BLACK |
Are the coil packs from the ver 7 engine ? If so, they are 20 years old.
Check the engine harness to make sure there are no wire issues ? Sent from my iPhone using NASIOC |
09-16-2022, 01:08 AM | #1439 | |
Scooby Newbie
Member#: 528517
Join Date: Jan 2022
Vehicle:2004 WRX Wagon Silver |
Quote:
Also yeah I've looked over the engine harness a few times as have a couple other people and everything seems to be correct. Of course I'll check again after switching out the packs just to make sure I'm not going crazy lol. |
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09-16-2022, 07:50 AM | #1440 |
Scooby Specialist
Member#: 110078
Join Date: Mar 2006
Location: Long Island N.Y.
Vehicle:02 Bugeye JDM STi OBP BLACK |
EJ207 Info
Swap the coil packs over. If your 04 coil packs are gray you may have to swap the black boots over from the ver 7 but try them first to see if they work without swapping boots.
I have a set of black coil packs I used for 4 years that are in perfect working condition I can sell you for a reasonable price. Pm me if you are interested. Sent from my iPhone using NASIOC Last edited by D-Rodman; 09-16-2022 at 02:45 PM. |
09-26-2022, 06:10 PM | #1441 | |
Scooby Newbie
Member#: 530997
Join Date: Aug 2022
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Quote:
Hey, I appreciate the reply. What I meant by my question was that I have an 04 Sti with a usdm ecu that is running an ej20x with the exhaust avcs left unplugged. What would happen if the exhaust avcs was just ignored and left alone on an ej207 with a usdm ecu? Hopefully that clears some stuff up about my car. Last edited by Alaaddin; 09-26-2022 at 06:11 PM. Reason: missing quote |
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09-26-2022, 06:38 PM | #1442 | |
Scooby Specialist
Member#: 110078
Join Date: Mar 2006
Location: Long Island N.Y.
Vehicle:02 Bugeye JDM STi OBP BLACK |
Quote:
I don’t know anything about ver 10 ej207 Sent from my iPhone using NASIOC |
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11-03-2022, 07:33 PM | #1443 |
Scooby Newbie
Member#: 178158
Join Date: Apr 2008
Chapter/Region:
South East
Location: Columbia S.C.
Vehicle:0002 ppg'd wrx / gc stm/wrb |
Ton of good info on here. Can someone point me in the right direction on using a V10 ej207 dropped in a 2011 STI and retaining the USDM ecu? Seems this would be fairly straightforward, with the addition a proper tune. I know the info is out there, perhaps in this thread, I just haven’t seen it. Thanks
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11-04-2022, 07:15 PM | #1444 | |
Scooby Specialist
Member#: 306719
Join Date: Jan 2012
Chapter/Region:
MWSOC
Location: Troy ,Michigan
Vehicle:2003 Sti Wagon @jn_garage |
Quote:
2008 STi EJ207 Version 8 Bottom end Dual AVCS EJ20X heads Swapped in USDM cams and sensors then it ran on factory ECU and we even tuned it with Cobb. This was a long time ago and my details may be fuzzy but I think that is all we did. Video |
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11-04-2022, 08:21 PM | #1445 | |
Scooby Specialist
Member#: 508105
Join Date: Nov 2019
Chapter/Region:
NWIC
Location: Greater Seattle Area
Vehicle:Link G4X flex tuned 02' EJ205 20G 6MT wagon |
Quote:
Which turbo specifically is it? And do you have a dyno sheet? Interesting to use the 207 bottom end and not the heads since they are truly what makes the 207 special. Edit: I see it was a Steamspeed turbo - no wonder it blew up |
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11-04-2022, 10:08 PM | #1446 | |
Scooby Specialist
Member#: 306719
Join Date: Jan 2012
Chapter/Region:
MWSOC
Location: Troy ,Michigan
Vehicle:2003 Sti Wagon @jn_garage |
Quote:
Entire hotside came apart sadly The heads were heavily gone over with +1mm valves and 272 kelford USDM 2.5 cams The car later made 450whp on a different turbo in Texas when my friend sold it to a friend. I will be building a similar power level for my second 207 |
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11-06-2022, 11:14 PM | #1447 |
Scooby Newbie
Member#: 532038
Join Date: Nov 2022
Chapter/Region:
International
Location: Tokyo, Japan
Vehicle:2008 JDM GRB STI White |
Just bought my JDM 2008 STI a few weeks ago...this thread had been amazing as I was unaware the JDM engine was that much different than the USDM one. Pleasantly surprised lol
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11-09-2022, 02:02 PM | #1448 | |
Scooby Newbie
Member#: 178158
Join Date: Apr 2008
Chapter/Region:
South East
Location: Columbia S.C.
Vehicle:0002 ppg'd wrx / gc stm/wrb |
Quote:
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12-10-2022, 08:47 PM | #1449 |
Scooby Newbie
Member#: 524046
Join Date: May 2021
Location: Napghanistan
Vehicle:2013 GRB STI Satin White Pearl |
What would be the proper coolant for a V10 EJ207? The car is a GRB hatch, so the tech in me thinks since Subaru switched to blue in 08 it should be the blue coolant. However, car has green coolant and I can't find any JDM FSM's that are still available to view.
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12-10-2022, 09:11 PM | #1450 | |
Scooby Specialist
Member#: 508105
Join Date: Nov 2019
Chapter/Region:
NWIC
Location: Greater Seattle Area
Vehicle:Link G4X flex tuned 02' EJ205 20G 6MT wagon |
Quote:
Blue Super Coolant. You can use the new blue coolant on cars that use the older style coolant, but not vice versa. Green can't go in the new cars. And also color alone isn't what you should be using to determine coolant types - although in this case it does help. |
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