018Q will be an AJQ ECU
018J will be an APP ECU
Should be interchangable without issues, only AJQ has no SAI from factory.
Just flash the new ECU with a stock 8N0906018Q job done.
where do you have the information that the 018Q is for an AJQ? I had already the new ECU in my car and my SAI started. Every information I found about that ECU is saying that it is for the APP.
That's why I bought it.
Any original stock file available here? Still new into this forum so need to figure it out first, what's in here..