A spreadsheet I made back in 2013 to help people get the hang of TunerPro and Cobb ATR. Generally the things people seem to struggle with, some basic theory/tables, and some 335i specific nonsense.

In this new/final version I tried to update pretty much everything since flash tuning is much more prevalent and more is known. Biggest addition is a tab on boost control and how to dial it in. It could use more work.

Noticeably lacking is information on how to use the boost scaling in MHD I guess, but if you can get through everything else you should be fine figuring out how that works.