I do some repair of Haldex unit`s and what to learn how to adjust the funktions in flash.
I see that some company offers "tuning" on Haldex unit and make program as "sport" "Sport" Street"
You can buy controller as you connect to orginial wire/connections to Haldex to adjust program easy in you`r car.

Please if someone has info about how to do or learn this please answer here in thread or send me a PM.