Now with "wifi" support! Well, it's not specifically WiFi, it's just a network socket, you'll have to provide your own WiFi. But anyways:
chunky@mills:~/src/obdgpslogger$ ./bin/obdsim -k 34000
SimPort name: Port 34000
Successfully initialised obdsim, entering main loop
Socket connected: Port 34000
10.000473 seconds. 1 samples, 2 queries. 0.10 s/s, 0.20 q/s
Received EXIT via serial port. Sim Exiting
chunky@mills:~/src/obdgpslogger$ telnet localhost 34000
Connected to localhost.
Escape character is '^]'.
41 00 FF FF FF FF
ELM327 v1.3a OBDGPSLogger
Connection closed by foreign host.