I have found some problem with usb adapter and vemstune communication:
All communication, logging, flashing, etc. good but when I start sd log in the menu, vemstune hangs or go out with timeout.
Interesting, but search sd log, clear sd works mostly error free, but start, stop sd log wrong about half of the try. Vemtune log shows communication timeout.
Another thing, when start sd log success, after that Vemstune lost comm, and need resync the communication vith ecu : password check, read tables and etc. (with normal rs232 port the Vemstune not lost the communication)
This is not prolific adapter, so I can't extend the timeout in the device manager, change to 1 byte the fifo or switch it off help a bit but not full sollution.
It seems, when comm switch from 19200 baud to 115k the would be some problem.
Reading sd log from ecu with Vemstune on 115k goes without errors..
