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Old 04-13-2014, 01:46 PM   #1
Scooby Newbie
Member#: 387613
Join Date: Apr 2014
Legacy US Legacy 2.5GT to EJ20 TT JDM

Currently doing a swap. Have a Legacy 2.5GT body with a 2.2 replacement motor in it. As far as I know it was straight plug n play with all wiring harness's so its still stock. Recently picked up a EJ20TT JDM for a decent price. But I have not been able to find wiring diagrams for the JDM engine.

I am really looking for a good wiring diagram for the Japan motor/fusebox/ecu ect. the actual motor installation wont be a problem. I can do the installation/fab/mechanical converstions. I just want an accurate diagram on wiring so I don't fry anything lol!

Any info/diagrams/tips would be very greatly appreciated! Thanks in advance and thanks for these great forums!!
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tavsimms is offline   Reply With Quote
Old 04-13-2014, 02:04 PM   #2
Scooby Guru
Member#: 159682
Join Date: Sep 2007
Chapter/Region: NESIC
Location: Maine
1995 WRX
1998 2.5 RS


First off figure out exactly what you have. There is no such thing as an "EJ20TT"

You could have anything from an old EJ20R to a newer EJ208
69subaru360 is offline   Reply With Quote
Old 04-14-2014, 01:38 PM   #3
Scooby Newbie
Member#: 387613
Join Date: Apr 2014

ej208 sorry. I was just referring to the ej20 twin turbo boxer engine I wasn't giving it as the engine model #
tavsimms is offline   Reply With Quote
Old 04-14-2014, 06:12 PM   #4
Scooby Specialist
Member#: 190405
Join Date: Sep 2008
Chapter/Region: SCIC
Location: Lake Forest, CA
2002 Impreza WRX


If I recall correctly, the twin-turbo JDM motor can only be used in a right-hand-drive chassis, due to the way the steering column interferes with the secondary turbo on a left-hand-drive car.
cartwheels4amile is offline   Reply With Quote
Old 04-14-2014, 06:51 PM   #5
Scooby Newbie
Member#: 228824
Join Date: Nov 2009
Chapter/Region: Tri-State
Location: Upstate NY

There's a reason those engines are so cheap...
Like cartwheels4amile said, the engine won't fit in a LHD car because of all the steering gubbins being in the way
nismogti-r is offline   Reply With Quote
Old 04-16-2014, 05:47 PM   #6
Purified Dick
Member#: 4562
Join Date: Feb 2001
Chapter/Region: NWIC
Location: Auburn, WA
1995 Legacy LSi
1998 Forester, lifted.


Plus it is a severe downgrade from the EJ255.

Why? Because twinturbo?
Hondaslayer is offline   Reply With Quote
Old 05-21-2014, 08:42 PM   #7
Scooby Newbie
Member#: 237066
Join Date: Feb 2010
Location: Clarksville TN/ Buffalo NY
95 Legacy Twn trbo
Rio Red


Trust me they can fit and work. I've been running one since 2008

And I have a wiring diagram book by the way lol in English too!
Jdmleggy97 is offline   Reply With Quote
Old 07-14-2014, 12:22 AM   #8
Scooby Newbie
Member#: 377655
Join Date: Jan 2014

still got the book? lol
Zno is offline   Reply With Quote

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