Avoid making these modifications to your car, they are illegal in the United States and you will get yourself in trouble with the police.

Many drivers choose to defy the automaker's rules and modify the car's original design with parts, accessories, and other changes that make it faster, smarter, or more aesthetically pleasing, whether or not they get in trouble with the police.

Lots of car lovers and modifications They spend a lot of money to improve the performance, aesthetics of the car, and even the sound the engine makes.

Presumably the cars are already engineered to perfection and have the right parts to deliver the performance the manufacturers promise. However, this is not always enough and manyThey decide to modify their cars to look the way they want. 

Modifying your car with parts, accessories, and other modifications can help make your car faster, smarter, or more aesthetically pleasing. ButSome of these mods are illegal and will get you in trouble with the police.

In this way, here we have collected some modifications of your car that They are illegal in the United States.

1.- High capacity air filter 

Cold air intake is an engine modification that may be illegal in California if not properly certified. We must remember that emissions laws are becoming more and more stringent and any changes that affect emissions are prohibited in several states of the country.

If your vehicle's air intake is not closed as required by law, then you are breaking the law. 

It is better to pay more for good quality parts that have been approved by the state to maintain or even improve the factory standard. 

2.- Windshield tinting

In most states, windshield tinting is illegal. This is a general rule that applies in almost all states because the traffic police require you to see who is driving.

3.- Sound systems 

Most states also oppose noise pollution and have laws against it, especially at night. In any case, there's nothing stopping you from upgrading your car's sound system if you're willing to turn the volume down when driving through a residential area.

4.- Frames or boxes for license plates 

These license plate decorations can be quirky, funny, and even cute, but if you don't let your car's license plate be seen, the police will ask you to remove it.

5.- Nitrous oxide system 

Nitrous oxide is seemingly an essential part of any speed lover's fashion package, but its use is illegal in many parts of the United States, which is not surprising since the speed-boosting chemical helps a car exceed posted speed limits.