Hello,
For the LED markers get the MTEC V3 ones. I have just installed these on my car and they look amazing!! For the E92 they cost £100 but totally worth it. You can get them from
http://www.hids-direct.co.uk/
Also look on ebay for the back LCI lights, i have just bought a pair for £420 delivered
For the remap type emaps into google ans ask for a person called simon, he is really helpful and will give good advice
hope this helps Lee