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Old 03-24-2011, 05:32 PM   #1401
Vlad
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No imobilizer on a JDM V9, right?

Edit: I found out later that there is no immobilizer on this version, for a Spec C. I also saw a regular Sti V9 with immobilizer feature. The first sign is that it will not release the fuel pump for priming.
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Last edited by Vlad; 04-19-2012 at 04:16 PM.
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Old 03-24-2011, 11:45 PM   #1402
181stLeader
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I am liking the sound of the 207 more and more. The ease of wiring into my 05 WRX makes this very appealing.

Now I just have to decide on what to get, v7 or v8...

I am thinking a v7 Spec C if I can find one.
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Old 03-25-2011, 10:57 AM   #1403
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Quote:
Originally Posted by 181stLeader View Post
I am liking the sound of the 207 more and more. The ease of wiring into my 05 WRX makes this very appealing.

Now I just have to decide on what to get, v7 or v8...

I am thinking a v7 Spec C if I can find one.
if you have a transmission that can handle lots of power down the line, than i say get a V7 and than get a nice turbo like a gt3076 somewhere down the line.

If you don't have the transmission and funds for the larger power output and looking for a great daily driver that you can have installed and forget it about it, than the V8 already comes with the twinscroll setup vf37 is a great option, great transient boost response etc.
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Old 03-26-2011, 12:54 AM   #1404
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im running a V7 in my 05 wagon. i am due for inspection in two weeks. anyone in Jersey here tell me how to get my car thru inspection????
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Old 03-27-2011, 02:28 PM   #1405
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V7 ecu may or may not pass. V8 is guaranteed to not communicate. Find a local with a USDM 05 ecu and just use the "force pass inspection" option before flashing it.
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Old 03-27-2011, 02:33 PM   #1406
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v8 ECU here. Passed in Indiana yesterday. Read just fine.
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Old 03-27-2011, 02:37 PM   #1407
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Quote:
Originally Posted by gingertooth View Post
im running a V7 in my 05 wagon. i am due for inspection in two weeks. anyone in Jersey here tell me how to get my car thru inspection????
hard work once it ....
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Old 03-27-2011, 08:45 PM   #1408
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Quote:
Originally Posted by fellstar View Post
v8 ECU here. Passed in Indiana yesterday. Read just fine.
maybe its just Massachusetts than. I worked at a dealer and the tech tried everything and he couldn't get the inspection machine to communicate with my ecu. Guy with screenname "crazymikey" used to drive a wrx with a ver7 swap and told me his ecu would communicate and he passed mass inspection with it.

But just to be safe, have usdm ecu handy. You can even pick one up at a junk yard or something along those lines.
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Old 03-27-2011, 10:55 PM   #1409
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i passed maryland inspection with my V8 ecu. and i'm keeping my usdm ecu just in case. but upon thinking about it, what happens when the car has a ia performance avcs wiring kit installed, and you plug in the usdm ecu? does it read any kind of error or anything? or can i just drop it in and use the force readyness function. i'm not really that concerned since i already passed and it good for two years, just wondering i guess.
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Old 03-28-2011, 09:56 PM   #1410
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ok
i damaged 2 pistons on my jdm v8 swap
any good piston choice other than stock ?
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Old 03-28-2011, 10:16 PM   #1411
Vlad
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Look, take a look in the built engine forum. All kinds of power, right?

But then take a look at how long those engines last, they have polls.
Average: 20-40 000 miles.

Now take a look at how long the EJ207 last.

If you don't care how long the engine lasts, build yourself an EJ257, for whatever power you want.

If you want an engine that lasts, leave the internals alone and stay within the generous power availabillity that the EJ207 has.

From what I'm reading, it seems that it is much more difficult to build for reliabillity and some power than to build for power.
The only way that is somewhat proven is to stay with a factory unit.
Reliabillity has everything to do with the conditions at engine assembly, and factory assembly line conditions are hard to beat.

So, in your case:

Get a factory pre-assembled 207 short block, as per the link the guy posted 2-3 pages ago. That is your best bet for a reliable build and to limit the involvement of local shops.
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Old 03-28-2011, 10:33 PM   #1412
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Quote:
Originally Posted by Vlad View Post
Look, take a look in the built engine forum. All kinds of power, right?

But then take a look at how long those engines last, they have polls.
Average: 20-40 000 miles.

Now take a look at how long the EJ207 last.

If you don't care how long the engine lasts, build yourself an EJ257, for whatever power you want.

If you want an engine that lasts, leave the internals alone and stay within the generous power availabillity that the EJ207 has.

From what I'm reading, it seems that it is much more difficult to build for reliabillity and some power than to build for power.
The only way that is somewhat proven is to stay with a factory unit.
Reliabillity has everything to do with the conditions at engine assembly, and factory assembly line conditions are hard to beat.

So, in your case:

Get a factory pre-assembled 207 short block, as per the link the guy posted 2-3 pages ago. That is your best bet for a reliable build and to limit the involvement of local shops.
i know what you mean
but i can't afford a block right now and the ej257 isn't available were i live
i'll try to get new internals from the factory, but they aren't forged,
plus are very expensive
so i thought i could do for a while with the after market internals ( the best i find )
i'm looking for an answer about the best of the worst
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Old 04-02-2011, 08:43 PM   #1413
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HI ALL,

I have a 2004 JDM v8 EJ207 STi With FP Red , 1000cc DW , HKS UPPIPE , EWG 38mm , Twin pumpers + more in progrees and should be finished with in the month.i will post dyno results onces tuned so everyone here can get an idea.IMO with the factory VF35 that was on there and only a gutted 3'' DP and TBE was better than any 2.5L i raced against and won.Once my boost came on it stayed on untill 7-800-8000ish and the car still had more in it.I would never go with the 2.5L even if i rebuilt it due to once you split it it will never have the same reliability as a 207 Forged steel piston / rods,forged aliminium crank shaft.
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Old 04-03-2011, 12:27 AM   #1414
scoobystas
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Quote:
Originally Posted by ovat83 View Post
HI ALL,

I have a 2004 JDM v8 EJ207 STi With FP Red , 1000cc DW , HKS UPPIPE , EWG 38mm , Twin pumpers + more in progrees and should be finished with in the month.i will post dyno results onces tuned so everyone here can get an idea.IMO with the factory VF35 that was on there and only a gutted 3'' DP and TBE was better than any 2.5L i raced against and won.Once my boost came on it stayed on untill 7-800-8000ish and the car still had more in it.I would never go with the 2.5L even if i rebuilt it due to once you split it it will never have the same reliability as a 207 Forged steel piston / rods,forged aliminium crank shaft.
Did you have a vf35 or vf37?? I'm pretty sure the vf35 came with the Australian ej207 and not the JDM 207. When you say you held boost to almost 8k, how much boost we talking like 13lbs??
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Old 04-03-2011, 12:48 AM   #1415
kayen
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VF35 was fitted on the UK STi models as well.
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Old 04-03-2011, 07:29 AM   #1416
gling
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Quote:
Originally Posted by gingertooth View Post
im running a V7 in my 05 wagon. i am due for inspection in two weeks. anyone in Jersey here tell me how to get my car thru inspection????
Quote:
Originally Posted by scoobystas View Post
V7 ecu may or may not pass. V8 is guaranteed to not communicate. Find a local with a USDM 05 ecu and just use the "force pass inspection" option before flashing it.
Quote:
Originally Posted by fellstar View Post
v8 ECU here. Passed in Indiana yesterday. Read just fine.
Quote:
Originally Posted by scoobystas View Post
maybe its just Massachusetts than. I worked at a dealer and the tech tried everything and he couldn't get the inspection machine to communicate with my ecu. Guy with screenname "crazymikey" used to drive a wrx with a ver7 swap and told me his ecu would communicate and he passed mass inspection with it.

But just to be safe, have usdm ecu handy. You can even pick one up at a junk yard or something along those lines.
Quote:
Originally Posted by lil'redwagon View Post
i passed maryland inspection with my V8 ecu. and i'm keeping my usdm ecu just in case. but upon thinking about it, what happens when the car has a ia performance avcs wiring kit installed, and you plug in the usdm ecu? does it read any kind of error or anything? or can i just drop it in and use the force readyness function. i'm not really that concerned since i already passed and it good for two years, just wondering i guess.
Gingertooth,

It is hit or miss and it depends on the state. Take scoobystas advice and borrow a USDM ECU as a backup. Flash it with your JDM ECU's ROM and force readiness just to be on the safe side. You may try going in for inspection with the JDM ECU first and if it fails to communicate, then throw the USDM one on and go in again. It's worth finding out if the JDM ECU will pass in Jersey. That way, you don't have to keep swapping out your JDM ECU for the USDM ECU.

I have the same issue in Mass; the emissions equipment in this state will not communicate with the JDM ECU and I have to do what I just described above. However, I used to pass Ohio and Connecticut emissions just fine with the JDM ECU. Hopefully Jersey falls into the latter category in terms of emissions equipment and OBD II communication protocol.

I have not had any issues running the USDM ECU with regards to AVCS as brought up by lil'redwagon. Just stay out of boost and the motor should be fine. I've not seen anything that warrants concern based on my AFRs and/or knock when doing so. Then again, I only have the ECU on for at most a day before getting tested and switching back to the JDM version.

Scoobystas,

Good to see another fellow 207 running around in Mass Hope to see you around some time.

Cheers.

Gerald.
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Old 04-03-2011, 11:02 AM   #1417
scoobystas
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Quote:
Originally Posted by gling View Post
Scoobystas,

Good to see another fellow 207 running around in Mass Hope to see you around some time.

Cheers.

Gerald.
Yes indeed, i'd love to see and hear that GT30R rip to 8k
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Old 04-03-2011, 11:15 AM   #1418
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Quote:
Originally Posted by gling View Post
Gingertooth,

It is hit or miss and it depends on the state. Take scoobystas advice and borrow a USDM ECU as a backup. Flash it with your JDM ECU's ROM and force readiness just to be on the safe side. You may try going in for inspection with the JDM ECU first and if it fails to communicate, then throw the USDM one on and go in again. It's worth finding out if the JDM ECU will pass in Jersey. That way, you don't have to keep swapping out your JDM ECU for the USDM ECU.

I have the same issue in Mass; the emissions equipment in this state will not communicate with the JDM ECU and I have to do what I just described above. However, I used to pass Ohio and Connecticut emissions just fine with the JDM ECU. Hopefully Jersey falls into the latter category in terms of emissions equipment and OBD II communication protocol.

I have not had any issues running the USDM ECU with regards to AVCS as brought up by lil'redwagon. Just stay out of boost and the motor should be fine. I've not seen anything that warrants concern based on my AFRs and/or knock when doing so. Then again, I only have the ECU on for at most a day before getting tested and switching back to the JDM version.

Scoobystas,

Good to see another fellow 207 running around in Mass Hope to see you around some time.

Cheers.

Gerald.
i am in texas, and i have talked to my friend down at the local testing station and he assured me the jdm ecu would pass, we will see if he is right come july lol, my only concern with the usdm ecu is the fact that the cam sensors are completely different, how does it run propperly?? just with no cam signal, and since its such a short time it doesnt matter??
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Old 04-03-2011, 11:44 AM   #1419
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.................................................. .................................................. ...........

Last edited by jam007; 04-12-2011 at 11:47 PM.
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Old 04-03-2011, 11:47 AM   #1420
gling
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Seanathanq83,

I'm not sure about the difference in cam sensors but was under the impression that they were the same. I've driven for more than 100 mi. on the USDM ECU before and have not had any issues. Good luck passing the emission test in Texas. Speaking of which, it'll be nice to compile a list of states that will pass JDM v8 ECUs. Thus far, we have:

Pass

1. CT
2. OH
3. IN
4. MD

Stinkin' 'lil f*kers

1. MA

Feel free to copy and paste the list to keep it alive.

Cheers.

Gerald.
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Old 04-03-2011, 02:04 PM   #1421
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Who here have used Tomei AVCS cams?
we've all seen the nice "buy-me" graphs, but I don't know anyone actually using them

we had Cosworth avcs cams in a ej207 but I didn't like them at ALL... non-avcs jun cams ran in another car gave it much wider and better powerband, too bad they don't have avcs version
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Old 04-04-2011, 06:52 PM   #1422
ovat83
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Quote:
Originally Posted by scoobystas View Post
Did you have a vf35 or vf37?? I'm pretty sure the vf35 came with the Australian ej207 and not the JDM 207. When you say you held boost to almost 8k, how much boost we talking like 13lbs??
Yep, i had the factory VF35 from the AU and uk models on mine and it held 14lbs -15 lbs at night when the temps were cooler untill almost redline.The response and mid range punch was unbeleivable and will be ''allot'' different to drive compared to the FPRED.The VF35 was a great combination to run with the EJ207.I definentely recommend it to any auto X fans out there and daily drivers.

-Ovat
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Old 04-10-2011, 07:53 PM   #1423
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Quick question, since I don't want to read this whole thread: what spark plugs does a Ver. 7 STI EJ207 take? I am currently rocking the OEM JDM Densos and after 65k miles I should definitely replace them. What are the NGK counterparts that I could just pick up at an Autozone or something, one step colder?
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Old 04-10-2011, 10:02 PM   #1424
fastnoypi
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Quote:
Originally Posted by legacy2003 View Post
Quick question, since I don't want to read this whole thread: what spark plugs does a Ver. 7 STI EJ207 take? I am currently rocking the OEM JDM Densos and after 65k miles I should definitely replace them. What are the NGK counterparts that I could just pick up at an Autozone or something, one step colder?
denso ik22 or ngk bkr7eix
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Old 04-10-2011, 11:35 PM   #1425
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^ Thank you very much!
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