Hyundai Elantra MD/UD: 3. Exhaust emission control system

Fifth generation (MD/UD; 2011–2016) / Hyundai Elantra MD 2010-2015 Owners manual / Maintenance / Emission control system / 3. Exhaust emission control system

The Exhaust Emission Control System is a highly effective system which controls exhaust emissions while maintaining good vehicle performance.

Vehicle modifications
Engine exhaust gas precautions (carbon monoxide)
Operating precautions for catalytic converters (if equipped)

2. Evaporative emission control (including ORVR: Onboard Refueling Vapor Recovery) system

The Evaporative Emission Control System is designed to prevent fuel vapors from escaping into the atmosphere. (The ORVR system is designed to allow the vapors from the fuel tank to be loaded into ...

Vehicle modifications

This vehicle should not be modified. Modification of your vehicle could affect its performance, safety or durability and may even violate governmental safety and emissions regulations. In add ...