When having trouble connecting if you get the error message - "USB handle in use restart NIStune". Just pull the USB cable out and replug it back in rather than restart the software. I had this error several times today whilst testing a Z31 MAF on my R31. Sometimes the software is not closing the device properly when it disconnects. Removing the USB plug will work around until I find the cause of the problem.
The other note with not connecting when running, i get mixed results. Sometimes it works and other times it doesn't. When it doesn't work you either get
a. consult display values, reconcile etc do not work (or)
b. invalid CONSULT value error message
another thing for me to look into... but i had to stop the engine, wait for ecu to power off (10 seconds, ECCS relay clicks off) and then restart to get around this... annoying
you shouldn't need to restart the software though in these circumstances however
The other thing I added last night is a RAM reset feature for deleting trimming values etc. It will erase some of the memory contents 0000-00F0
Note: USB Connect/Reconnect issues
Moderator: Matt