If the Bluetooth not able to connect, key off and key on, re-connect again.

　
• Bluetooth adaptor have the Power saver function, if not connect or any operation after key on for a long while, will turn off the power of Bluetooth automatically.
　
• If Bluetooth disconnection, or not able to connect, or sending the Adjustment no succeed for many times( No OK sign appear), Key off over 5 secs , and then key-on(doing the initialization), and then re-connection.

Able to send the adjustment command while engine is running with APP 2.0

　
• Will effect immediately once sending command successful while engine is running, not need to waiting key-off and key-on.
　
• If Bluetooth disconnection, or not able to connect, or sending the Adjustment no succeed for many times( No OK sign appear), Key off over 5 secs , and then key-on(doing the initialization), and then re-connection.

Could leave the Bluetooth plug on the vehicle or take it down from vehicle after adjustment

　
• After send command succeed, after key-off, the command store at RAM, will write into Flash memory, no need for Bluetooth when ECU operation next time, you could leave the Bluetooth plug on vehicle or take it down from vehicle.
　
• Bluetooth adaptor water proof code is IP67, no influence under heavy rain. But, to be noticed, some old vehicle, the diode on Rectifier had been destroyed, already lost over voltage cutting function for protection, during engine running at high engine speed, the AC generator voltage could reach over hundred Volts. And, the Battery indicator on dashboard only could indicate low battery condition, but no warming for high voltage, the connected electronic may damage due to high voltage.