https://www.golfmk7.com/forums/index.php?threads/italian-tune-up.351431/
I'm not convinced it does anything (but I believe it does) however it is simple/cheap enough that I do one every few months. I admit to driving in commute speed most of the time which makes me think I it's a good idea for me as I only tend to push car 1x week.
Thanks for the link, I didn't realize there is somewhat of a method to it. I only have a 3 mile drive to work and live about the same distance from most places I go in town. Every 2 weeks or so I drive hard up and down a nearby country road but will probably try this next time.