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Dont plg in or remove oft or any other obd device while engine is running or ignition on.
Always stop wngine and turn igntion of before pligging in or re!oving any device on obd port else you can cause interruption to cann buss communocations and get issues your having.
Also when flashing or reading ecu you need to have ignition full on but engine stopped.
Logging is only time you want engine on
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