Actually most problems are
Actually most problems are with factory tunes and pro tunes when they blow up on the dyno...There is so much hype about pro tunes being so much better which for the most part is nonsense...Tuners change knock detection parameters so it appears the tune is better...I have 2 pro tune maps and when I run at the track I use my ots ethanol tune because it has the most power and smoothest delivery...Poor driving habits are also a cause of many engine failures as well...Bottom line though is there have been engine failures due to poor factory tunes like on the 2015 wrx, and other issues related to insufficient oiling...Not exactly common, but they have occurred..