Dear Contributors,

I would like to change the software in my DME from 520 to 525, car is 6 Cyl, European without post CAT Oxygen Sensors and No Secondary Air pump

I've done changes to my engine including pistons from 2.2 to 2.5, I've checked the other parts and no changes needed or seem to be needed to make it a real 525 except changing the DME software to 525. I will reflash the DME with WinKFP with the new ZB number and hopefully it will be fine.

Also i will need the ZB number for EGS for 525

My car is E60 520 production date 12/2003

Much appreciated,
Abed