I’ve for sale a fully virginised Alpina B5 ecu backup. Fully virgines mean that the ISN was set back and the VIN number is cleared. It means after installation you only need to sync in INPA to make it work.
This full backup could be flashed to all BMW ecu with Bosch pn 0 261 209 010.
What is different than normal e60? As you you know this car is supercharged so the parameters are tuned to the supercharger. In addition it uses a boost regulator, map sensor and 2 EGT sensor. It means it has a different software running which utilises speed density. If your Alpina ecu is dead or you supercharged your N62 engine you can start experiancing with this ecu.
You only need a tool with which you can load the full backup to sour ecu. Like a KTAG or BDM100.
I can also provide you the wiring and map sensor type to make it work.
Price is 600 euro.