Hyundai Veloster Catalytic Converter (2011-2016)

The catalytic converter is the main pollution control device in the Veloster’s exhaust line. It converts harmful gases such as carbon monoxide (CO), unburned hydrocarbons (HC), and nitrogen oxides (NOx) into less harmful emissions like carbon dioxide (CO2), water (H2O), nitrogen (N2), and oxygen (O2). It uses a honeycomb monolithic substrate coated with precious metals (platinum, palladium, rhodium) to maximize contact surface with exhaust gases. It is specifically designed for Veloster engines including the 1.6 GDI, T-GDI, Turbo, and Veloster N models to ensure emission compliance and legal road use.

Hyundai offers different OEM catalytic converter assemblies based on year and engine type. Examples include:

• 2011–2014: Converter Assembly – Catalytic, Part Number 28960-2BAA0
• 2015–2017: Catalyst Case Assembly (Front Pipe), Part Number 28530-2BTB0
• 2019–2021: Case Assembly – Catalyst, Part Number 28530-2BTY0

These OEM parts are often integrated with the front pipe (downpipe) and come with Hyundai's manufacturer warranty when purchased from authorized dealers. Always verify compatibility using your Vehicle Identification Number (VIN).

Yes, performance-oriented high-flow catalytic converters are available for Veloster models. For example, some are designed to reduce exhaust restriction, improving exhaust flow and potentially increasing high RPM power. Features may include:

• Reduced backpressure for better flow
• Construction from quality stainless steel for durability
• Some models include a 90° air injection tube to simplify installation

However, these may have variable legal approval depending on region (CARB, EPA certifications) and can sometimes trigger engine warning codes (P0420) if the engine control unit detects unexpected exhaust flow.

Typical signs of catalytic converter failure include:

• Loss of engine power, especially at high RPM due to partial clogging
• Increased fuel consumption
• Check engine light with P0420 error code indicating catalyst system efficiency below threshold
• Rattling noises inside the exhaust from broken substrate pieces
• Stronger exhaust odors and potential failure of emission inspections

Addressing these issues is important for vehicle performance, safety, and emissions compliance.

Replacing the catalytic converter involves these general steps:

• Raise the vehicle safely using jack stands or a lift
• Remove any heat shields or protective covers as needed
• Disconnect oxygen sensors (lambda sensors) before and/or after the catalytic converter
• Unbolt the catalytic converter assembly (often integrated with the front pipe/downpipe) from the exhaust manifold and exhaust line
• Remove the old catalytic converter assembly and install the new OEM or approved aftermarket part with new gaskets
• Reconnect oxygen sensors, reattach heat shields, and check for leaks
• Start the engine and confirm absence of error codes or exhaust leaks

Detailed illustrated guides and videos specific to the Veloster exist online to assist with the installation process.

Catalytic converter deletes, replacing the converter with a straight pipe to reduce exhaust backpressure and alter sound, are generally illegal for road use in most jurisdictions including the EU and North America. Important considerations include:

Risks and restrictions:

• Failing emissions inspections and technical control
• Persistent check engine lights (P0420/P0430 codes)
• Legal penalties, fines, and refusal of vehicle registration
• Usually only permissible for off-road or circuit use where legal

Always verify local laws regarding emissions compliance before considering removal of catalytic converters.

When servicing the catalytic converter, related exhaust components often considered include:

• Exhaust hangers (rubber mounts securing the exhaust system)
• Oxygen sensors (lambda sensors critical for catalytic converter function and ECU monitoring)
• Exhaust manifold and its gasket (connects engine to catalytic converter)
• Exhaust pipes and muffler downstream of the converter

Replacing gaskets, sensors, and worn mounts during catalytic converter replacement can prevent future issues and ensure proper system operation.

Key points about pricing and selection strategy:

• OEM catalytic converters typically cost between $1,400 and $2,000 or more (excluding labor), depending on year and engine
• Aftermarket catalytic converters, including high-flow models, usually cost less but vary in quality and legal compliance
• For daily-driven vehicles subject to strict emissions inspections, OEM or certified compliant aftermarket converters are recommended
• For performance or racing projects where emissions compliance is not mandatory, high-flow converters or deletes may be options—though legality and ECU tuning must be considered

Always factor in installation labor costs, warranty coverage, and regional emission regulations when making a purchasing decision.