Go buy a painted BBQ pit from Walmart and light a few 600f fires in it. Watch all the paint peel off and rust kick in. Now look at a turbine housing and realize they get 1600f regularly. You don’t need to be Sherlock Holmes to see how it could go bad.
I like to think the BMW paint is a bit higher quality than the cheapo chinese made walmart BBQs but I get your point. A webber grill does not have this issue which is what I would equate bmw to.
Your compressor and DP are coated like mine. Once you wrap the DP and use a turbo blanket I don't see why you would need to put gold tape everywhere? Or are you not planning on either? I have heard that the chrome coating will dull with heat cycles but no 1st hand experience. Hopefully it does not, because it looks great.
I have not heard of people complaining on this platform that their ST made their paint peel off. Have you? If so, it certainly does not come up a lot.
Anywho just curious, as you hear some stories where all people did was wrap the DP and they were fine, other people insulate every line and even then use gold tape on everything.
edit: I don't think anything beats white lightning. other than that welded insulation stuff which looks like it takes forever to install. Don't even know it's name.