If you had no issues for 80k miles that's great! Probably means a lot of highway driving and may i assume oil changes a bit more frequent then 10k miles? Doesn't APR recommend changing oil every 5k miles? (would they if tune didn't increase long term wear?) All im saying is there is no fee lunch here, and im not sure what kind of proof im supposed to present to show that if push the engine to work harder and squeeze more out of it it's very likely it will shorten its life expectancy. 80k is great but its just a sample of 1 and its only 80k. I'd like to know how its holdung up after 100k, 150k and 200k etc.