F44 coding - please help

[Edi-EZTuning]

Hi, I am really hoping that someone can help me?
I have a 2030 M235i which I absolutely love. However, I have a pet hate with this car… the volume of the indicators! The indicator sound in this car is by far the loudest I’ve ever experienced in a car.
Does anyone know if there is a code to reduce this volume? I’ve noticed there are lots of code lists online but not much for my F44.

If anyone could help with a full code list that would be great. 

Also, im about to upgrade the very basic standard sound system for a Harman Kardon bmw system. Can anyone tell me where the amps are to be fitted and where I find the head unit to connect the amps to?

Thank you everyone in advance. Looking forward to seeing if you can help me 

car 2020 or 2023 ?
then i-drive system in your car id6 or id7 ?