DINAN Cold Air Intake and software from a 1997-1998 E39 528i.

This set it discontinued by DINAN. They no longer make them. 

DINAN Cold Air Intake includes: 
Aluminum tube, 
Cone Filter,
AIR FILTER SOCK

OBD1 Cap with CARB Sticker

Plastic cut-out panel to go in front of the shock-tower to give it an OEM fitment.

Brackets to hold it in place.

With the CAI, you get the DINAN Software and hardware intended to give you the full advantage of the set up. 

This includes the DINAN MS41.1 DME (Engine Control Module). I went the extra step and programmed this DME to be plug and play without programming needed on your part.

Dinan Automatic Transmission Control Module. This is most likely plug and play as it doesn't have any immobilizer segments. Do more research about it!

Feel free to send me a message to discuses anything about this set up!

Some of the Dinan Part Numbers. Google them and read more about the set-up 
Part # D902-28A5

Part # D403-0350

Part # D401-0111

Part # D903-285TU2