Specifically: The miles are retained in the cluster and ECU. When they are different, an indicator dot will illuminate indicating a milage dispute. The miles on the original //M3 will be displayed on the cluster, not your current miles. You'll need to run one wire for the MPG gauge to work (The KB article worked for me) The tach will not work properly. __________________ SOLD!!! 1999 332ti //M Sport Titanium Silver M3 S52 3.2 I-6 Engine, M3 Clutch w/ ti Getrag Trans, Z3 3.15 LSD medium case diff and half shafts, OEM Hatch Spoiler, Eurosport HP Underdrive Pulleys, FDM, 17" DS1 rims, M3 Front Struts & Springs, M3 Instrument Cluster, 3-spoke //M steering wheel with tri-color stitching, SSK, CCFL Angels in Depo projectors with 5k HIDs |