So you are saying if you add 50+ hp and or 75ftlbs tq there's no extra motor wear that may cause a failure prematurely????Uhmm, that's the way it works on my 2017 Focus RS. If you disconnect the battery for several minutes to allow the capacitive volatile memory to bleed down, all that type of info is reset to zero. The way the dealer questions whether you "had" a tune on the vehicle is with the number of key cycles since last reset. The dealer can't read the previous tune data at all. Cobb is quite correct in their suggestion that if you're really concerned about your warranty, DO NOT install a tune. Pretty simple. The Cobb tune(s) aren't going to cause any engine damage, but other things may fail as they normally would and result in you wanting warranty service.
Basically, if you can't afford to pay, then don't play.
That's comical.
Fyi, my focus rs is tuned. I'll take the chance.