So I bought and 05 evo ecu hoping that it would work in an 04 evo if I changed the immobilizer code. it didnt' work for me. Is there a specific way for doing it? I changed the hex code from the 04 ecu to the 05 ecu. It still doesn't start.
Now if I disable the immobolizer, it starts. Weird. I put my 04 ecu back in the car and it starts just fine so I know the code is immobilizer code is correct.
Please advise