That will take too much time and probably have to start the whole thing from scratch. You can use other OBDLink device with Torque Pro to display these data.
It does not using the KTuner LED settings. For FL5 dash you have to set the revlimit in the Setup menu.
No you can't run two device, it's not just read data.
If you have any issue, reach us out via email and I will try to help fixing the issue.
There was a few rare cases where the issue was the BT module in the KTuner unit. They sent it in and the unit was fixed by KTuner. I told you on Mar 30, 2021 to contact them and send it in for testing.