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Old 03-03-2009, 05:48 PM   #1
Scooby Newbie
Member#: 173164
Join Date: Feb 2008
Chapter/Region: NWIC
Location: portland, oregon
1999 2.5rs 2dr
rally blue

Default Need Major Help!!

I have a complete 2004 jdm 2.0 long block with vf34 and tranny. It is also side feed injectors. I need to know which usdm ecu and engine wiring harness will be most compatable with this because i need to pass emissions. Im pretty sure i have to merge the wiring unless there is a usdm complete wiring harness out there that will just plug into everything... I also need help in finding out which rear differential I need because the final gear ratio is a 4.444 for the jdm tranny and i have a 2.5rs rear diff which is a 4.111.

Thanks for all the help!

oh yeah i also have a crossmember from a 02 wrx and figured out that my front sway bar will not work with it... i need help in finding out which sway bar will work with this?

PS: this is all going into my rally blue 2dr gc8.
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Last edited by gc8v6; 03-03-2009 at 06:14 PM.
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Old 03-05-2009, 12:18 AM   #2
Scooby Specialist
Member#: 48377
Join Date: Nov 2003
Chapter/Region: MWSOC
Location: "They eat fish soaked in lye"
1996 Gutted, built
XP class Impreza L


Search is your friend. Look through the transmission forum stickies for info on the diff. As for emissions, what you need to do depends on where you live. Fill out your profile. There is not a USDM wiring harness that will plug right up and work.

Any swaybar off a turbo impreza will work. You will also need the correct bushings to go with the bar and mounts that you have.
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