What change did you want to make to the spec? Anything major?
I was going to upgrade my Dynaudio to the Tech Pack. Mainly for the App-Connect/Carplay/Mirrorlink stuff than anything else though the dealer did say that they'd heard that VW had only managed to get that working with a handful of phones so far.
Did the same, upgraded to the tech pack back in April. Time will tell what the situation with carnet, etc is. My expectations of it are not high.
What was your original estimated BW?