No tuning but on my 2021 3.5L EB, I decided to spring for the Rutheniums figuring they'd be an upgrade. I was wrong:
https://www.f150forum.com/f102/bad-experience-ngk-ruthenium-spark-plugs-566796/
[I posted this over on the F150 Forum but didn't get a response so I'm trying here as well to see if anyone knows the answer]
In Forscan I changed all the seat types to "Fixed seat present without Buckle Sensor". This disabled the chime and the seatbelt screen that comes up every time I start...