From what I read, it shouldn't need any shims unless its already out of spec (and most aren't); but wavetrac provides them with the diff. Is this incorrect?
'08 E90 335i 6MT. VM 6466g2 kit. Stage3+ Fuel-It with FPR return, BMS PI injection, widebody
'09 Z4 sDrive35i DCT, MHD Backend flash, JB4, DCI