Dyno/Tune Questions

[Smurfeh]

Hey everyone!

I'm going to be driving my truck 5000kms to its new home here in a couple weeks and I have time booked with a tuner/dyno. I have never been to one of these places before are there something I should keep in mind when getting him to dial in the tune?

I have a 5.3 with DoD should i have that disabled? assuming that its possible without changing some serious components.

What are somethings that I should have altered? I'm somewhat satisfied with the mail order tune but the shift points are slightly off.

The Tuner suggested doing a highway tune which I agree with as this is going to be a highway machine and has no need to be on a dyno, but once again I know next to nothing about what goes on there.

If you have had a dyno tune and have something you would have done different I want to hear them!! Thank again guys!