Just in case others would like to know. I talked to Terry and he said I should stick with map 1. If I use higher octane or octane booster, then I can use map 2. Or else I'll just get a lot of knock which won't give me more power. And he said I can run map 5 as well, i personally feel like map 5 is faster.
Just my own 2 cents.
2011 Alpine White E92 335i M-Sport N55 Engine