EJ207 Info - Page 57

snow_bound26 · 10-30-2021, 08:29 AM

Thinking my PCV valve is clogged or stuck based on how my car behaving right meow. Is the v7 PCV valve the same as the 02/03 USDM 205? Or is there a specific JDM part number I need to find?

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D-Rodman · 10-30-2021, 12:10 PM

Quote:

Originally Posted by snow_bound26

Thinking my PCV valve is clogged or stuck based on how my car behaving right meow. Is the v7 PCV valve the same as the 02/03 USDM 205? Or is there a specific JDM part number I need to find?

Same as 02-03 wrx, a threaded nipple onto the back of the intake manifold

snow_bound26 · 10-30-2021, 12:52 PM

Quote:

Originally Posted by D-Rodman

Same as 02-03 wrx, a threaded nipple onto the back of the intake manifold

That's what was thinking since it's looks identical from the outside. Thanks

HaasMonster · 01-19-2022, 12:23 PM

I'm leaning towards swapping EJ207 into my 2005 WRX. I've considered short-block builds but would prefer to avoid the long break-in period since the car is mainly used for RallyX.

Is there anything I should be aware of when looking at V7 engines? They're getting up in age and inventory is low but I think they're more reliable than EJ205 swap for my needs.

I'm open to any suggestions!

Gigs90 · 01-20-2022, 06:38 PM

Quote:

Originally Posted by HaasMonster

I'm leaning towards swapping EJ207 into my 2005 WRX. I've considered short-block builds but would prefer to avoid the long break-in period since the car is mainly used for RallyX.

Is there anything I should be aware of when looking at V7 engines? They're getting up in age and inventory is low but I think they're more reliable than EJ205 swap for my needs.

I'm open to any suggestions!

get the nicest v8/9 engine you can find then prepare to overhaul it anyway

D-Rodman · 01-21-2022, 02:59 PM

He may be looking at a v7 in order to stay single scroll.

Bluestreak03 · 01-22-2022, 09:37 AM

Quote:

Originally Posted by HaasMonster

I'm leaning towards swapping EJ207 into my 2005 WRX. I've considered short-block builds but would prefer to avoid the long break-in period since the car is mainly used for RallyX.

Is there anything I should be aware of when looking at V7 engines? They're getting up in age and inventory is low but I think they're more reliable than EJ205 swap for my needs.

I'm open to any suggestions!

I would say that's ultimately going to based on budget, and at the very least if they can get a verified compression and leak down test... Won't make a difference if you go single or twin scroll... Minor things needing swapped

D-Rodman · 01-23-2022, 07:57 AM

Choose wisely, do you already have a good turbo and turbo back exhaust you want to continue to use or are you looking for an all new setup ?
Do you have an Accessport you want or need to continue using or do you want to run on a jdm ecu with functional avcs and open source tuning ? Are you setting up a street/track car or street only, track only ?
The direction you need to take is based on many considerations, including budget.

SunBurntGinger · 05-20-2022, 03:22 PM

Hello!

I recently completed dropping in a used V7 EJ207 into my 2004 WRX. I have been following this EJ207 info thread which has been amazing help! I'm getting ready to start up the car. But before I do, I wanted to make sure the Neutral Safety Switch had the correct polarity. I'm a little confused on how to do this, and how to change the polarity if I end up needing to. I haven't used Romraider before. Is Romraider the only method to check the polarity?

My thoughts are that I'm overthinking this polarity thing and that all I have to do is cut the wires and just swap the wires around.

More info:
- Manual 5 speed
- AVCS wiring is installed
- The car has a remote start installed.* (Im assuming this affects things)

iNfEk · 05-20-2022, 05:36 PM

My understanding from what I remember from back in the day is NSS is reverse vs usdm. But everything else is the same.

SunBurntGinger · 05-20-2022, 05:39 PM

Okay so am I correct in thinking that i just cut the wires and flip the connections?

iNfEk · 05-20-2022, 06:05 PM

Quote:

Originally Posted by SunBurntGinger

Okay so am I correct in thinking that i just cut the wires and flip the connections?

Don’t cut anything. Just de-pin the 4 pin for 5MT or 6 pin for 6MT

D-Rodman · 05-20-2022, 09:21 PM

Have your tuner change it, that’s what I did because like you, I couldn’t do it myself.

Sent from my iPhone using NASIOC

NewSilverWRX · 05-20-2022, 11:42 PM

You should be able to hex edit the ROM. This dependent on the ROM you are using. I did it for mine, v9 spec c into 2004 wrx 5mt. If I recall Romraider doesn't have a toggle for it hence the hex edit. Also, I think the problem is a NO vs NC thing, not polarity. If it was me I wouldn't cut or depin anything you can do with a simple rom edit.

Start here and search for NPS on the Romraider forums: https://www.romraider.com/forum/view...p?f=15&t=10794

SunBurntGinger · 05-21-2022, 07:12 PM

Thanks guys! I’ll see if I can do it my self… I’ll need to get a tractixs cable and RomRaider. Then learn how to use it because I’ve never used it before! Lol. But regardless I should learn how to use RomRiader since my Cobb won’t work with the ecu anyways.

05-20-2022, 03:22 PM	#1409
SunBurntGinger Scooby Newbie Member#: 530118 Join Date: May 2022 Vehicle: 2004 Impreza WRX	Nuetral Safety Switch Polarity V7 EJ207 2004 WRX Hello! I recently completed dropping in a used V7 EJ207 into my 2004 WRX. I have been following this EJ207 info thread which has been amazing help! I'm getting ready to start up the car. But before I do, I wanted to make sure the Neutral Safety Switch had the correct polarity. I'm a little confused on how to do this, and how to change the polarity if I end up needing to. I haven't used Romraider before. Is Romraider the only method to check the polarity? My thoughts are that I'm overthinking this polarity thing and that all I have to do is cut the wires and just swap the wires around. More info: - Manual 5 speed - AVCS wiring is installed - The car has a remote start installed.* (Im assuming this affects things)

05-20-2022, 09:21 PM	#1413
D-Rodman Scooby Specialist Member#: 110078 Join Date: Mar 2006 Location: Long Island N.Y. Vehicle: 02 Bugeye JDM STi OBP BLACK	EJ207 Info Have your tuner change it, that’s what I did because like you, I couldn’t do it myself. Sent from my iPhone using NASIOC Last edited by D-Rodman; 05-21-2022 at 08:32 AM.

05-20-2022, 11:42 PM	#1414
NewSilverWRX Scooby Newbie Member#: 58485 Join Date: Mar 2004 Chapter/Region: MWSOC Location: Chicago IL Vehicle: 2004 RASC.207 WRX 5M PSM	You should be able to hex edit the ROM. This dependent on the ROM you are using. I did it for mine, v9 spec c into 2004 wrx 5mt. If I recall Romraider doesn't have a toggle for it hence the hex edit. Also, I think the problem is a NO vs NC thing, not polarity. If it was me I wouldn't cut or depin anything you can do with a simple rom edit. Start here and search for NPS on the Romraider forums: https://www.romraider.com/forum/view...p?f=15&t=10794 Last edited by NewSilverWRX; 05-21-2022 at 02:56 AM.

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10-30-2021, 08:29 AM	#1401
snow_bound26 Scooby Specialist Member#: 395793 Join Date: Jul 2014 Chapter/Region: Tri-State Location: SLC and Lake Placid Vehicle: 2005 92x Aero Beige	Thinking my PCV valve is clogged or stuck based on how my car behaving right meow. Is the v7 PCV valve the same as the 02/03 USDM 205? Or is there a specific JDM part number I need to find? * Registered users of the site do not see these ads.

01-19-2022, 12:23 PM	#1404
HaasMonster Scooby Newbie Member#: 522220 Join Date: Feb 2021	I'm leaning towards swapping EJ207 into my 2005 WRX. I've considered short-block builds but would prefer to avoid the long break-in period since the car is mainly used for RallyX. Is there anything I should be aware of when looking at V7 engines? They're getting up in age and inventory is low but I think they're more reliable than EJ205 swap for my needs. I'm open to any suggestions!

01-21-2022, 02:59 PM	#1406
D-Rodman Scooby Specialist Member#: 110078 Join Date: Mar 2006 Location: Long Island N.Y. Vehicle: 02 Bugeye JDM STi OBP BLACK	He may be looking at a v7 in order to stay single scroll.

01-23-2022, 07:57 AM	#1408
D-Rodman Scooby Specialist Member#: 110078 Join Date: Mar 2006 Location: Long Island N.Y. Vehicle: 02 Bugeye JDM STi OBP BLACK	Choose wisely, do you already have a good turbo and turbo back exhaust you want to continue to use or are you looking for an all new setup ? Do you have an Accessport you want or need to continue using or do you want to run on a jdm ecu with functional avcs and open source tuning ? Are you setting up a street/track car or street only, track only ? The direction you need to take is based on many considerations, including budget.

05-20-2022, 05:36 PM	#1410
iNfEk Scooby Guru Member#: 21339 Join Date: Jul 2002 Chapter/Region: HIIC Location: Kapolei, HI Vehicle: 2002 LHD STI V7 6MT [email protected] EJ205 4EAT	My understanding from what I remember from back in the day is NSS is reverse vs usdm. But everything else is the same.

05-20-2022, 05:39 PM	#1411
SunBurntGinger Scooby Newbie Member#: 530118 Join Date: May 2022 Vehicle: 2004 Impreza WRX	Okay so am I correct in thinking that i just cut the wires and flip the connections?

05-21-2022, 07:12 PM	#1415
SunBurntGinger Scooby Newbie Member#: 530118 Join Date: May 2022 Vehicle: 2004 Impreza WRX	Thanks guys! I’ll see if I can do it my self… I’ll need to get a tractixs cable and RomRaider. Then learn how to use it because I’ve never used it before! Lol. But regardless I should learn how to use RomRiader since my Cobb won’t work with the ecu anyways.