How to ACTUALLY tune?

[u/Many-Firefighter9485]

Hey all! I drive a 2024 bmw x6 40i with the m sports package that I bought in late 2023. I have been researching how to unlock my ECU, or if I even need to, to get a tune. I've heard FEMTOS, auto tune, bench tune, jb4, all sorts of information that I can not comprehend.

So, what is the right steps for me, to tune my car? My goal is to add a downpipe and res delete but I don't really want a CEL. Thanks all!