That's a good dealer right there Dave. Mine is like that too. Had my 6.0 tuned with an SCT using Spartan tunes and never had any issues with dealer (or the tuned truck for that matter)
Tim and Paula
2015 RW 39MB - Mor/ryde 8K IS with Kodiak Disc brakes. Goodyear G114s on 17.5 Rims. 420 watts Solar on roof, 440 amps of AGM batteries, 2000 watt Magnum inverter wired to sub panel.
2016 Ford F-350 DRW - B&W 20k OEM Companion hitch, Firestone Airbags