TBH I don't get the logic of detuning because of lower quality/octane fuel. Almost all modern cars have knock sensors that will not allow the engine to make peak hp if it detects knock(sometimes even before knocking/pre-detonation actually happens). In turbocharged cars, I think this is accomplished by opening the wastegate earlier and limiting boost. Doing so does absolutely no damage to the engine in the long term. Maybe I'm wrong and someone can correct me on this?
Why Atlas detunes their engines if they know this is beyond me. I would much rather have a car that at least has the capability of generating the rated hp.
I'm also skeptical that the original 2016/17 turbos actually knocked on local fuel. I'm pretty sure that X also had a knock sensor in international markets. Most likely it was some other issue(perhaps the wastegate? or maybe VSA like I've heard from some people) but I don't know for sure because I've never owned one.
