It's important to note that while these methods can help to reduce noise in a car, it is often difficult to completely soundproof a car due to the nature of the vehicle and the fact that the car will be moving. Therefore, for the best results, a combination of different methods is recommended. Looking for soundproofing accessories in Malaysia? We have Various Types of Custom and Ready Made Car Sound Proof for Hood, Trunk, Boot, Roof, Floor, Door, Mud Guard, A-Pillar, B Pillar, and Firewall. Cheap Price✓ FREE Delivery Available✓ Worldwide Delivery✓.