I don't charge for coding mate - I'm not a pro so it's just mates helping eachother out as far as I'm concerned. I just ask people to make a donation to a charity that is close to my heart.
It's def poss with xenons, off the top of my head it's about changing the cake of a couple of entries from wert_1 to wert_3 or something along those lines. I only found out today you can do it with halogens tho!
MY14 Space Grey F11 530d M-Sport