This came with the NX shell I picked up, the car had a U13 DET. The ECU is coded A11-C99-BZ9 which is a B13 SR20 ECU. I opened it up and found this, anybody know WTF?

http://img181.imageshack.us/img181/1373/ecu1yf1.th.jpg (http://img181.imageshack.us/my.php?image=ecu1yf1.jpg)
http://img181.imageshack.us/img181/1664/ecu2vf1.th.jpg (http://img181.imageshack.us/my.php?image=ecu2vf1.jpg)
http://img181.imageshack.us/img181/8708/ecu3jp0.th.jpg (http://img181.imageshack.us/my.php?image=ecu3jp0.jpg)

Travis E.