tuning/logging over wireless (RS232 transceiver)

[uzelac]

Have anyone used some wireless BT/RS232/TTL transceivers which emulate RS232 to connect to VEMS ECU ?

I've bumped to devices like these:
http://www.ebay.com/itm/2-8Km-27dBm-Wireless-Transceiver-RF-Module-RS232-TTL-x2-/250930292989?pt=LH_DefaultDomain_0&hash=item3a6c9c68fd#ht_4251wt_1163

There are also much cheaper versions for smaller distances.
Sounds both handy and fun, and seem much more simpler than TCP/IP.
I can easy see myself messing with friend's VEMS while he is driving on track

btw. What is a minimum baud rate for good connection with VemsTune?