ej255 in 2004 sti?

drumminguy81 · 10-01-2011, 03:44 AM

I am in the market for a new engine for my 2004 sti i was curious if an ej255 out of a 06+wrx would work? If so would it be plug and play? Engine harness work? Could i bolt a vf39 on it with no problems? Would the intake manifold off the 257 bolt on and work? Would i need to use the sti injectors? Ecu? Tranny bolt up fine? Has anyone tried this?

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drumminguy81 · 10-02-2011, 03:58 AM

anyone have any input?

buzzword · 10-02-2011, 09:39 AM

It will work great. You could even use a 255 out of a 04-05 forester xt.

drumminguy81 · 10-02-2011, 01:10 PM

Will everything plug right in? No modification?

Subie805 · 11-26-2020, 04:17 AM

I want to do same thing in my sti 2004

Subie805 · 12-03-2020, 09:19 PM

Quote:

Originally Posted by buzzword

It will work great. You could even use a 255 out of a 04-05 forester xt.

hello I want to do a swap in my sti 2004 with a ej255 sg9 from a forester 2006 2007 my question if the ecu from that year its if Immobilized????

10-01-2011, 03:44 AM	#1
drumminguy81 Scooby Specialist Member#: 283834 Join Date: May 2011	ej255 in 2004 sti? I am in the market for a new engine for my 2004 sti i was curious if an ej255 out of a 06+wrx would work? If so would it be plug and play? Engine harness work? Could i bolt a vf39 on it with no problems? Would the intake manifold off the 257 bolt on and work? Would i need to use the sti injectors? Ecu? Tranny bolt up fine? Has anyone tried this? * Registered users of the site do not see these ads.

11-26-2020, 04:17 AM	#5
Subie805 Scooby Newbie Member#: 499448 Join Date: Mar 2019	ej255 sg9 swap to my sti 2004 I want to do same thing in my sti 2004

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10-02-2011, 03:58 AM	#2
drumminguy81 Scooby Specialist Member#: 283834 Join Date: May 2011	anyone have any input?

10-02-2011, 09:39 AM	#3
buzzword Scooby Newbie Member#: 123353 Join Date: Aug 2006 Chapter/Region: BAIC Location: SF CA Vehicle: 2006 AW STi FLI tuned - 280/[email protected]	It will work great. You could even use a 255 out of a 04-05 forester xt.

10-02-2011, 01:10 PM	#4
drumminguy81 Scooby Specialist Member#: 283834 Join Date: May 2011	Will everything plug right in? No modification?