So I met up with DimSum today (great guy) - reprogrammed my ECU from Halogen to Xenon and presto. No more errors about the low beams.
So to re-iterate what needs to be done for this swap to be error free, this is what I did and works
- can-bus error cancelling ballasts
- (courtesy of sharp pointystick) in-line resistor with AE to remove parking error
- flash ECU from Halogen to Xenon
- Euro bulb socket for turn signals
If you need anymore info, pm me.