On the temp issue, strongly recommend a scanner to confirm temp ecu sees. This will also give you other PIDs such as open or closed loop operation and fuel trims. Investment $100 I went with kiwi wifi 2 and dashcommand iOS app. This will take out much guesswork. The temp gauge can be unreliable.
John can you explain the diff between open loop and closed. I think open is the way it is when we start but I am not sure when each governs?