I recently bought a new to me 2009, F350 (97,000 miles) and am happy to have found this forum as I have a ton of questions. Any help going forward will always be appreciated.

1) Other than not hearing the sound but seeing the Supercharger dial (on dash) move, how do I know it was really deleted?
2) Pickup came with a "Mini-max" Tuner, can I unplug the unit from cord (goes in back of small unit to move and secure to dash) without erasing its settings? I admit, I know nothing about tuners yet it has stock, street, performance, tow and one other I think.
3) I've been told never to idle these 6.4L as that is an issue. I would think warming it up the morning on first start would be ok?
4) I do need to order the new 3 part plastic tailgate top cover (with integrated step, grab bar not inside), best place for aftermarket?
5) Any other big tick advice Items I should know?

Respectfully,
Craig