How To Make a Car Exhaust Back Box Sound More Louder

If you have added a universal car exhaust back box to your car's exhaust system, it will help make the car have sporty exhaust sound, although it will not be really loud. The easiest and inexpensive way to make a car exhaust back box to sound more louder and raspy, would be to remove the catalyst converter and replace it with a straight pipe. The catalyst converter is placed in the middle of a car's exhaust system, to keep the emissions the car exhaust produces to a minimum level. So when your car goes for a MOT test at your local garage and you have removed the catalyst converter, it will not pass on the emissions test, which will fail your MOT test.