There are to be some changes to the MOT test from 1st January 2012 which are being introduced in response to European Commission Directive 2010/48/EU of the 5th July 2010 and which will effect those with aftermarket HID headlights and remapped ECUs:
4.1.4 Compliance with requirements:
(a) Lamp, emitted colour, position or intensity not in accordance with the requirements
(b) Products on lens or light source which obviously reduce light intensity or change emitted colour
(c) Light source and lamp not compatible
4.1.5. Levelling devices (where mandatory):
(a) Device not operating.
(b) Manual device cannot be operated from driver’s seat.
4.1.6 Headlamp cleaning device (where mandatory):
Device not operating.
For anyone with a remap, section 6.1.9 may be relevant.
6.1.9 Engine performance:
(a) Control unit illegal modified.
(b) Illegal engine modification.
(by 'illegal', it is assumed that they mean changed/programmed differently from OEM specifications)
There will also be a new check on the general condition of the wiring:
i'm locking this as its just scaremongering. actually no sod it, i'll keep it open... good discussion and example of how pap spreads.
I have took my HIDS out mind, for a start i only kept them in the hope i'd find some ph1 projectors. Theres some xenon filled bulbs out there now that arent as bright but still look great (phillips iirc) so i'll be getting them... keeps it OEM+ too