The ignition ring is just a transmitter. You didn't need to change that. To get back to one key, first switch your ignition cylinder back. Second, you need to open up both keys and switch the chips inside. Therefore you have only one key for the car, but the matching electronics for you new EWS system. __________________ 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 |