brother stock projectors are not designed for hid. if you are using hid in them it might burn them. have a look at it.
also in high beam normal halogen projection housing cant manage the disperse of hid and it will be a hassle if you install hid in high beam.
best you can do is to opt for good halogen bulbs like osram night breaker laser in low and high beam or high end led bulbs like philips zes ultinon.
hid are only suggested where housing is designed for them