That being said, I started with a 1992 OBD1 EJ22 swap and later went to a 2006 Impreza EJ253 with the drive by wire. The immobilizer wasn’t something that caused any issues. I had the harnesses done by AutoVentures for the EJ22 and Busaru for the EJ253. The OBD2 allows for a reflash or physical code killer, and I could be wrong but i don’t believe the immobilizer even comes into play at all.?

The Smallcar throttle cable to the DBW Subaru pedal in the engine compartment is what I did, and it works great. I believe the option of adding cruise control is easier in the DBW setup than an old school manual throttle body/accelerator pedal setup.?

What I did, for like $2500 was get an AVLS JDM EJ253 and used that as my engine, and used the USDM intake and wiring harness to run it. After a had a bad experience with an engine builder here in the US, I was hesitant to go with another rebuilt engine and I wanted a long block that hadn’t been opened up yet and messed with and had low miles. To me, a 50k mile factory Japanese built long block will allow for better long term reliability than an engine put together by some redneck “engine builder.”

My thought was, it would allow for easy engine replacement when this one gets tired. Just order up another JDM and swap it out in a day.?

Just my $0.02

Connor