I just wanted to test if my Mega2560 is working properly.
I loaded the Speeduino IDE and opened TunerStudio (virtual car dashboard), but when I varied the voltage of pin A1 both the Inlet Air Temp and Coolant temp gauge move together like they are connected. A0 moves only the IAT gauge. So I tested the ReadAnalogVoltage on both pin A0 and A1, and they weren't connected together.