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Old 10-18-2005, 12:44 AM   #12
AlpoRS
Scooby Newbie
 
Member#: 81338
Join Date: Feb 2005
Location: Portland, OR
Vehicle:
2005 2.5 RS Wagon
Crystal Gray Metallic

Default

the reason i say that the wiring harness for a usdm sti engine is almost exactly the same as the 05 rs is because when i got my engine management (perfect power) put on to my 05 rs, it was before rallitek had the schematics or layout for the 05 rs ecu plugs. They noticed that the new engine used some of the same parts as the 04 sti and looked at the ecu plug layout and it was almost if not exactly the same, maybe a wire or two different here or there. One way or another, they were able to successfully set up engine management for an 05 rs with the layout from an 04 sti...this is how i know.

I am not sure if they are 100% identical, but i think you could cross out one major pain and labor intensive burden from your swap.
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