I have a 2018 F150 3.5L eco-boost. I have 83k on the odometer now. This only Seems to happen on long trips. Rough idle like I had bad gas... no engine light. I cleaned the MAP sensors. The next 2 long trips, I had a loss of power and rough idle. Upon inspection, the right Waste-gate was stuck open. Worked it a few times, had the wife give it a few revs to make sure it was working, took off and still low power. Hooked up a cheap scanner and had P0018 and P0021. Cleared the codes and runs fine, plenty of power, etc.
Please let me know your thoughts? No rattles at start up cold or hot...