[Waylon Queen]

As I'm going down the road tuning with TunerStudio ms, data write fails and I pretty much get a power cycle. I lose all spark and both fuel injectors. TunerStudio sees a lag or pause in data transferring. anyone experience this? if so what did you do to fix or bypass it? thanks

[jonbill]

Hi,
Please share some details:
Speeduino version.
Board
Your tune and a datalog (zipped together)

[miker]

As well as the above, what are you changing? Some things need the board to reset so they will cause the effect you describe - however you have to manually reset the board so it shouldn't be a surprise.