g0lds

That’s just because between the cars the gear determination tables are different. Otherwise the code is the same. These would on matter on the ‘07+ ECU anyway as it uses them to adjust boost control and throttle shift match logic.

 

To update my initial question: yes you can put a 2005 Legacy GT 3.27 ratio trans+differential into a 2005 Outback XT where a 3.59 ratio used to be. It is 100% plug and play with no changes to the TCU, ECU, tune, wiring, etc. They are completely identical (ratios notwithstanding).

Will a 5EAT out of an 05 Legacy GT sedan plug and play into a 05 Outback XT if rear diff is changed to match too?

I just wanted to follow up with this... The ground wire had broken off inside of the RH (passenger) side cam position sensor connector. It wasn't till I realized there was no resistance between the wire and the chassis ground that I inspected the wire closely and realized it was completely severed inside the connector. Anyways, I spliced the connector and pigtail from the JDM wire harness and the code was gone. The motor runs wonderfully on the USDM components.

g0lds, I am not really sure what to suggest. I would certainly check that you have the exhaust cam sensors connected correctly. You could swap things left to right and see if the problem follows the sensor.

 

Yeah, I wouldn't expect the JDM ecu to pass emmissions. My plan was to swap back to the US ecu if/when I need to get it scanned for emmissions.

 

The exhaust AVCS system is unplugged as I'm running the USDM ECU+harness. I am going to go through the factory service manual flow chart for the P0340 code. I'm thinking I may have damaged a wire when replacing the harness. I'll post back after I do some diagnoses this weekend

Sorry to bump an old thread but I need help. I am in the process of wrapping up this swap into my 05 OBXT. I am getting a "cam position sensor a circuit low input" trouble code but both my USDM and JDM engine are 3 wire cam position sensors and are identical. I used the JDM manifold (because TGV delete), USDM injectors and wire harness but I'm still getting the code. Any ideas? Going to try to install the USDM cam position sensor just in case the JDM is actually faulty.