Did a lot research this morning and i've come to the conclusion
that CODING is required if you upgraded to larger caliper brakes/rotors.
Check out this thread here -
http://f30.bimmerpost.com/forums/sho...hlight=HO-Wort
There are lots of guys that DIY their m performance brakes complaining about the same issue I am feeling right after install. Once they coded the car for SPBR "Sport brakes" the pedal feel went back to stock if not better. Even guys who have aftermarket Brembos/stoptechs would benefit from this since the ecu will increase line pressure once its coded for it. I saw atleast one other thread where someone drove around with stoptechs for 3 months then coded to SPBR and said that the initial pedal feel improved noticeably.
So for those who are currently rocking BBKs now without coding....you are missing out the full benefits of the brakes!
I am going to attempt this tonight and will report back my findings.
Alan