- Exhaust headers: Headers that do not meet noise level regulations can be illegal in some areas.
- Exhaust systems: Aftermarket exhaust systems that produce excessive noise can be illegal.
- Air intake systems: Cold air intake systems that do not meet emission standards can be illegal in some states.
- Turbochargers and superchargers: These forced induction systems can be illegal in certain states and countries if they are not CARB (California Air Resources Board) certified.
- Nitrous oxide systems: These systems can be illegal in some states and countries due to their use in street racing.
- Window tint: Window tint that does not meet the legal limit for light transmittance can be illegal in some states and countries.
- Lift kits and suspension modifications: These modifications can be illegal if they result in the vehicle exceeding the legal height limit.
- Rear spoilers and body kits: These accessories can be illegal if they obstruct the driver's view or pose a safety hazard to other road users.
It's crucial to check the local regulations and laws in your jurisdiction to determine which car performance accessories are permitted. Violating these regulations can lead to fines, penalties, or even impounding of the vehicle.
