Bought this from another member but never installed it myself, and I don't plan on it as the car is for sale.
JB4 module and wiring
Bluetooth adapter
USB connection
OBDII Connection
$350 shipped conus
New in box VRSF charge pipe for the N55. Never installed. Replaces your plastic piece for an aluminum version.
$185 shipped conus
VeePeak OBD tuner: Use with apps to check codes, or even code int/ext lighting, active exhaust, flash transmission and numerous other settings. Buy either of the above items and take this for $20.