Catalytic Converter Laws in Texas

In motor vehicles, the catalytic converter is an anti-pollution device that changes toxic byproducts of burning fuel into gases naturally. Some drivers hope that by eradicating the converter you can boost performance whilst others seek to replace converters with parts of normal exhaust pipes in effort of avoiding extra costs. Those actions are against the Texas state law and any violators are charged with up to $25,000 fine.

The U.S. Environmental Protection Agency‘s anti-tampering law is protected under the Mobile Source Enforcement provisions Memorandum No. 1A. The law indicates that the EPA does not recognize any changes to a certified configuration federal law violation in case there is a solid foundation that prevents emissions from being highly affective. Proof of federally endorsed testing should be available upon application.

Tampering is Illegal

In Texas, it is illegal to tamper with good working catalytic converters or other pollution control apparatus. Tampering involves removing, disabling or causing the pollution controlling gadgets of a motor vehicle making it inoperable.

Tampering includes and not limited to:

– Getting rid of the air pump, catalytic converter and EGR: exhaust gas recirculation valve or any tampering that hinders them from working well, such as disengaging of electrical, vacuum lines or mechanical parts within the pollution control system.

– Changing any car or truck’s catalytic converter, making it unable to meet its manufacturer’s specifications.

– Installation of replacement parts not identical in function and design as the originally installed parts.

– Adding of any parts that not originally certified for the car, such as turbocharger installation.

Driving Without a Catalytic Converter is Banned

The Texas law restricts driving of motor vehicle with inoperable or missing pollution control system. This applies to all vehicles despite of whether driven on or off-road. In Texas it is illegal to sell, offer, or lease any motor vehicle that does not meet the entire pollution control systems in good working order. This can be done only if it meets all the required conditions.

Repair Rules

Chapter 114 of Texas Clean Air Act demands that any failed or missing catalytic converter and not limited to any non-functioning control devices should be replaced with the one specified for that vehicle.  That should be one certified by the EPA. All repairs should cater for all the emission standards of that vehicle.


The laws in Texas only exempt engines and vehicles utilized exclusively for research and development, auto racing, department of defense or vocational instruction. Other exempted vehicles are those made before 2000, in addition to engines or vehicles being exported from United States.

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