[userbinator]

Catalytic converters are required by law too, yet I know plenty who have done a "cat delete" on their vehicle. As a simpler example, pulling the seatbelt chime fuse was a common mod long ago when I grew up. You may want to check if the modding scene has any solutions for your make and model.

[bzzzt]

If you modify your car in such a way in the EU it won’t pass the mandatory yearly inspection which means it’s no longer road legal.

[userbinator]

You obviously restore your mods before the inspections, and redo them afterwards. Even the "stupid Americans" know that much. ;-)