Hi, i've got the same problem, that megatune can not connect to the egt gauge..
i've tried it on 2 pcs:
- vista with onboard rs232
- xp with usb to rs232
and with both i have the same problem..
when i select the right com port and data rate (19200) and hit test, it just says no response,
but when i open the terminal, it says "booted" when i switch on the gauge..
any suggestions?