Cold air intakes are not illegal, but they might void vehicle warranties. These aftermarket modifications can improve engine performance and fuel efficiency, but it’s important to check local regulations before installation.
Cold air intakes are popular aftermarket modifications that can enhance a vehicle’s performance and efficiency. However, there is a common misconception that they are illegal. In reality, cold air intakes are legal in most areas, but it’s essential to consider potential warranty issues and local regulations before installing one.
Understanding the legalities and potential drawbacks of cold air intakes can help vehicle owners make informed decisions about modifying their vehicles.
This article will delve into the legality of cold air intakes and provide insights for those considering this modification.
Are Cold Air Intakes Illegal In California
In California, cold air intakes are illegal if they don’t have a CARB EO number. The California Air Resources Board requires cold air intakes to be street legal, which means certified by CARB, otherwise, they’re not allowed for use on highways in California.
Why Cold Air Intakes Are Popular Among Car Enthusiasts:
- Increased horsepower and torque: Cold air intakes are designed to maximize the amount of oxygen entering the engine, resulting in improved fuel combustion and increased horsepower and torque.
- Enhanced engine sound: Many car enthusiasts appreciate the deep growl that cold air intakes can provide, giving their vehicles a more aggressive sound.
- Improved fuel efficiency: By optimizing the air-to-fuel ratio, cold air intakes can also contribute to better fuel economy, which is an added bonus.
The Legality Of Cold Air Intakes In California:
In California, the regulations surrounding vehicle modifications are known to be quite strict. While some modifications are allowed, it’s essential to understand the specific guidelines regarding cold air intakes:
- California Air Resources Board (CARB) approval: Cold air intakes must be certified by the CARB to be legal in the state. CARB-approved intakes meet strict emission standards and are deemed compliant with California regulations.
- CARB Executive Order (EO) exemption: Some cold air intake manufacturers obtain an EO exemption directly from the CARB, allowing their products to be used legally in California. Always verify if the cold air intake you choose has this exemption.
- Compliance with noise regulations: Along with emission standards, cold air intakes must also adhere to noise regulations. Excessive noise emissions can result in a citation, so it’s crucial to choose an intake system that meets noise level requirements.
Are Cold Air Intakes Legal In California
Cold air intakes are legal in California as long as they are CARB (California Air Resources Board) compliant. However, it’s important to check the specific details and regulations regarding cold air intakes in California to ensure compliance with the law.
Consulting with a knowledgeable automotive specialist can provide further guidance on this issue.
California Air Resources Board (carb) Regulations:
- California is known for having strict emission regulations, and any modifications to your vehicle’s intake or exhaust system must comply with the California Air Resources Board (CARB) regulations.
- CARB requires aftermarket parts, including cold air intakes, to have an Executive Order (EO) number. This EO number ensures that the modification meets specific emission standards set by CARB.
- Without a valid EO number, cold air intakes are considered illegal for street use in California.
Potential Consequences:
- Installing a cold air intake without a CARB-approved EO number can lead to penalties or fines if your vehicle fails a smog check or inspection.
- In California, vehicles that do not meet emission standards may not be registered or can face revocation of their registration if found non-compliant during a smog check.
- Additionally, if your vehicle is involved in an accident, insurance companies may deny a claim if they determine that the modifications made to your vehicle were illegal.
Carb Eo Numbers And Legal Cold Air Intakes:
- CARB-approved cold air intakes come with an assigned EO number. This number can usually be found on the intake itself or in the product documentation.
- To ensure that a cold air intake is legal in California, check if it has a CARB EO number specifically granted for your vehicle make, model, and year.
- Cold air intakes with valid CARB EO numbers are considered legal for use on public roads in California.
When it comes to installing a cold air intake in your vehicle in California, it is crucial to comply with CARB regulations. Always check for a valid CARB EO number when purchasing a cold air intake to ensure its legality.
Failing to adhere to these regulations can result in various consequences, including fines, registration revocation, and potential insurance issues. Stay informed and make sure to choose a CARB-approved cold air intake for a hassle-free experience with your modified vehicle.

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Frequently Asked Questions Of Are Cold Air Intakes Illegal
Are Cold Air Intakes Illegal In All States?
No, cold air intakes are not illegal in all states. The legality of cold air intakes varies from state to state. Some states have restrictions on modifications to the intake system, while others allow it as long as it meets certain criteria.
It is important to check your local laws and regulations before installing a cold air intake.
Does A Cold Air Intake Void The Warranty Of My Vehicle?
Installing a cold air intake generally does not void the warranty of your vehicle. However, if the modification causes damage to other parts of the vehicle, those specific damages may not be covered under warranty.
It is recommended to consult your vehicle’s warranty documentation and manufacturer guidelines before making any modifications.
Do Cold Air Intakes Really Improve Performance?
Yes, cold air intakes can improve performance in some cases. They work by increasing the amount of cool air that reaches the engine, which can result in improved combustion and increased horsepower.
However, the actual performance gains may vary depending on various factors such as the vehicle’s make and model, engine condition, and overall tune of the vehicle.
Are Cold Air Intakes Difficult To Install?
Installing a cold air intake can vary in difficulty depending on your level of experience and the specific make and model of your vehicle. In general, it is a relatively straightforward process that can be done with basic hand tools and following the manufacturer’s instructions.
However, if you are unsure or not confident in your abilities, it is recommended to seek professional installation.
Conclusion
Based on the information presented, it is evident that cold air intakes are not inherently illegal. While some states and localities have specific regulations regarding modifications to vehicles, the legality of cold air intakes ultimately depends on the specific laws in your area.
It is crucial to consult your local authorities and understand the laws governing vehicle modifications to ensure compliance. Taking the necessary steps to stay within legal boundaries will ensure a hassle-free driving experience.