Is it necessary to do full vehicle sound insulation?

[VanNorah]

Full vehicle sound insulation is necessary to do. The method for full vehicle sound insulation is: 1. Drive the vehicle to a safe location, engage the hand brake and turn off the engine to ensure safety. Remove the interior trim in the order of outside first and then inside, exposing the working surface, and place the removed screws and clips into sealed plastic bags. 2. Thoroughly clean the working surface with an asphalt cleaner. For difficult-to-remove attachments, try using other specialized solvents to dissolve them first, then slowly scrape off the attachments with a specialized scraper. 3. Reinstall the interior trim from inside to outside as originally positioned. During installation, ensure all parts are reinstalled exactly as they were, and all screws and clips are tightened and secured to avoid generating secondary noise.