I want a professional tune but left open for my custom touches

[racing4funn]

Im not a tuners and cant even began. However I may want certain things that a tuner may not be interested in doing and or cant track him down 10 years from now.. If I had a Fashscan and VIN licenses, Could someone (would someone) write my tunes and leave them where I can modify them later? For lack of a better or correct word, unlocked. Is this do-able?

This is for my personal truck 2012 Cummins that I have owned since new and hope to get another 20 years out of. Thats a lot of years and I want control to check off boxes that might cause engine lights later down the road.

If someone can help then PM me or email. thanks!