e39 M52B28tu - ECU flash?

[Dave]

Guys,

Weighing some options. One is an e39 M52 with the double vanos.

I understand this has EWSII. Is this just as easily flashed out as the EWS on the earlier M52/s52 ecus?

I know the harness wont have the x20, so wiring may be a little more work.

Any other obvious reasons this is any more difficult to swap in than the early x52?

Thanks in advance,

-Dave