Up for sale is a Burger Motorsport JB4 "Harness B" piggyback tuner for 2012+ E Series N55s, complete with the BMS USB/Data cable. The JB4 comes loaded with the most updated ISO firmware version from BMS. No E85 pumps in my area so the unit does not have the Flex Fuel wires (which are only $25 from BMS).
Extremely pleased with the performance of the JB4 tune and functionality. Selling because I traded my 1er for a E46 M3.
Asking $350 shipped. JB4 is located in Wilmington, NC at present. Price includes standard shipping to the lower 48. Not considering offers to ship elsewhere at this time.