I am glad I decided to not learn how to tune after 20 years in the USN and some of those working on insanely complex gear sometimes under very stressful situations involving things I cannot talk about.......I could learn, I could master it, I just got to burned out to want to, I was a very very good tech but no longer am.......
I find it quite interesting to learn from the sidelines the basics and how complex and incredible what is being done and there are those willing to dig in and figure it out, tune, etc.....very glad for it!
Maybe I should of learned as had one new cars engine blown up on a dyno and one blow up a day after an $1100 tune by "experts" and they did not cover my losses, one did partly when I took a "bubba", an actually serious one at that, and a demand letter to his shop.....
That reminds me of a "roll cage" I was having built by a shop the owner claimed to be the local rally scrutineer but the job was so horrible I called my neighbor, the regional SCCA inspector and he brought over the real scrutineer and they wrote and signed a letter which I took to the shop and left with a car load of new parts I could sell to recover the loss.
Anyway, thanks for all those that take the time, I am sure most all absolutely love doing this, to learn how to maximize these ever increasingly complex machines!