Adding sound deadening back to car - what material should I get?

[repoman89]

realoem has the CSL spec'd with the same insulation as non-sunroof'd E46 coupes

https://www.ecstuning.com/b-genuine-bmw-parts/roof-sound-insulation-front/51488229733/

https://www.ecstuning.com/b-genuine-bmw-parts/insulation/51488229734/

they could be wrong though (wouldn't be the first time), BMW did omit a lot of stock insulation from the CSL

Yep I noticed that too when I was parts shopping for the project, but NZ_M3 has stated on here that there isn’t roof insulation in his CSLs

https://nam3forum.com/forums/forum/main-forum/e46-2001-2006/94946-what-sound-insulation-is-present-on-regular-m3s-but-not-the-csl

[Estoril]

When it comes to selecting the right sound deadening material for your car, there are several factors to consider. First and foremost, you want to choose a material that has similar or better sound deadening capabilities than the original equipment (OE) material. This will ensure that you are achieving the same level of noise reduction or better. Some popular alternatives to Dynamat include brands like Hushmat, FatMat, and Noico. It's a good idea to compare the materials offered by each brand to find the one that best suits your needs.

Holy bot posting!

[IamFODI]

Holy bot posting!

Thanks for flagging this here and elsewhere, Estoril.