It can be coded, Macht Schnell and KW also sell code delete modules.
If you don't use a module you will have an error light on your idrive / dash. It's not a huge deal; more annoying than anything. I lived with it for 6 months. I just put my EDC shocks back on and my error light went off but then it returned. I'm not sure if it's related but the dealer diagnosed it as a module failure.
'04 E46 M3 - Jet Black - Sold
'08 E90 M3 - Alpine White - Sold
'13 E92 M3 - Silverstone II - Sold
'13 E92 M3 - Alpine White - Ohlins TTX, Fall-Line Suspension Arms/Bushings, AP Racing BBK, OE GTS Aero, Cobra Seats, Akrapovic GT4, GMG 4-point, BBS E88
Last edited by slicer; 12-15-2012 at 08:45 PM.