tow it to the dyno, have them do the work to your ecu, and break it in on the dyno while tuning it. modern engines dont really require a break in period. just crank it up and let it idle for about 10-15 mins or so before you get ready to go to the dyno to make sure you dont have any leaks and to let it get up to temp once, then change your oil and make sure there isnt anything out of the ordinary with the old oil (metal shavings, misc bad shit) then its off to the dyno.