Spare ECU EDC16C39 with different family reference number?

[SoftDev]

I wonder what will happen if I replace these two ECU-s with different family reference numbers:


My working ECU: 0281013138 EDC16C39-5.65 55204661


Spare ECU from eBay with immo off: 0281015160 EDC16C39-6.65 51821929

[SoftDev]

Does anyone know what is different in the ECU-s with difference family reference? The cars and the components inside are same...

[SoftDev]

OK, I tried it.


After I turned off the immobilizer and manually transferred all my Stage 2 changes into the new ECU, the car starts and works on idle but can not be revving the engine.