Apple removed the extension from the 30 pin connector, so the increased reception is not true. Please see other posts and Apple discussions for complete documentation.
2015 750i X-DRIVE, M-Sport, (born 3/6/2015), Moonstone Metallic, Ivory White/Black w/Honey Walnut, ARS, B&O Sound, Escort 9500ci. VO and FDL Coded. BMS Stage 1.