The issue is that I bet modifying the firmware will have consequences on insurance and liability in case of an accident. Regardless of whether or not one is at fault or not, and that it didn't have any effect
Absolutely not. Immediately trade that shit in. Uh uh. No. Fuck off. Keep fucking off. Fuck off some more. Fuck off until you've circumnavigated the globe then fuck off again.
As someone who owned a 1993, a 2000, and a 2008 BMW in succession, I cannot believe anyone would buy the pieces of crap they have turned into.
I stopped buying them when they started piping in fake engine noise into the cabin and dropped all pretense that the cars would last beyond the lease period (I don’t buy new cars).