04 STI SWAP INTO 05 RS

[05RSKID]

I have decided to do an STI swap with my 05 rs. I have the complete drive-train, computer and wiring harness. The wiring harness has a few cut wires here and the but still in good shape. I was wondering do I have to use the complete wiring harness or can I splice off of the wiring harness in the car? I don't really want to tare the dash out and run all the wiring but I will if that's the best bet.

 

[Meyagi]

jdm or usdm wiring and ecu?

you will also need rear sti hubs to use the diff and axles, which means rear brembos too. if its a jdm ecu, you cant use it due to the fuel over there is way better then the fuel here, using it will lead to crazy amounts of detonation due to over advanced timing. if its usdm, your best bet is to rip your body harness out of your car and send it with the sti harness to east coast swappers and they can do a harness merge. it will save a lot of time and aggrivation.

 

[05RSKID]

I believe its all jdm since the motor is the EJ207

jdm or usdm wiring and ecu?

you will also need rear sti hubs to use the diff and axles, which means rear brembos too. if its a jdm ecu, you cant use it due to the fuel over there is way better then the fuel here, using it will lead to crazy amounts of detonation due to over advanced timing. if its usdm, your best bet is to rip your body harness out of your car and send it with the sti harness to east coast swappers and they can do a harness merge. it will save a lot of time and aggrivation.