Audi TT Catalytic Converter

The catalytic converter in an Audi TT is a vital component of the exhaust system that reduces harmful emissions such as hydrocarbons (HC), carbon monoxide (CO), and nitrogen oxides (NOx) by converting them into less harmful substances like carbon dioxide (CO₂), nitrogen (N₂), and water (H₂O).

The catalytic converter uses precious metals such as platinum, palladium, and rhodium as catalysts to accelerate chemical reactions. Typically, it is a three-way catalytic converter for petrol engines that oxidizes hydrocarbons and carbon monoxide and reduces nitrogen oxides. It requires a minimum temperature of around 200°C to activate and relies on oxygen sensors before and after the converter to monitor efficiency and adjust the air-fuel mixture via the engine control unit (ECU).

Many Audi TT models, such as the 2016 versions with petrol or diesel engines, are equipped with advanced catalytic converters including NOx catalysts and selective catalytic reduction (SCR) systems with AdBlue or urea injection for diesel engines. These ensure compliance with Euro emission standards.

• Diesel models often have NOx sensors and temperature sensors integrated.
• Petrol models use three-way catalytic converters with lambda sensors for monitoring.

These technologies help maintain low emission levels and flag any faults through the engine warning light.

Typical signs of catalytic converter issues include:

• Engine warning light activation due to sensor faults or exhaust emissions.
• Reduced engine power and sluggish acceleration.
• Increased fuel consumption.
• Strong sulphurous or rotten egg odor from the exhaust.
• Engine entering limp or emergency mode with a lean mixture.

Prompt diagnostic scanning with OBD tools is recommended to detect error codes such as P0420 indicating inefficiency in the catalytic converter.

Diagnosis typically involves scanning for OBD error codes and comparing gas emissions before and after the catalytic converter. If replacement is needed, it is imperative to use genuine OEM or certified high-quality parts to ensure correct fitment and compliance with emission standards. After installation, all fault codes should be cleared and the vehicle tested under real driving conditions.

• Always check vehicle compatibility using VIN before ordering.
• Replacing associated oxygen or NOx sensors is recommended alongside the catalytic converter.
• Proper installation by a specialized garage is advised to maintain warranty and performance.

To ensure the catalytic converter remains efficient and lasts longer, consider the following tips:

• Use quality fuel that meets regulated standards, avoiding poor-grade petrol or diesel.
• Regularly inspect and replace oxygen and NOx sensors as needed to maintain proper engine control.
• Avoid short trips where the engine does not reach optimal operating temperature, as this limits catalytic activation and passive regeneration.
• Attend routine vehicle checks with a qualified workshop focused on exhaust and emission system health.

Neglecting these may lead to clogging, cracks, or failure liable to cause emissions violations and fines.

Krosfou offers high-performance, brand-new catalytic converters made with INOX 409 stainless steel and advanced ceramic monoliths treated with precious metals to ensure outstanding durability and emissions reduction efficiency. These converters are certified and comply with European regulations including E24-103R certification, often exceeding OEM standards.

• Krosfou catalytic converters fit many Audi TT models and are compatible based on VIN verification.
• They come with a 3-year warranty covering up to 100,000 km when installed properly with professional assistance.
• Installation guides and technical support are available to ensure correct fitment and performance.

Ordering direct from factory enables access to genuine quality with favorable shipping and returns policies.

Krosfou offers reliable shipping options across Europe and internationally with standard and express delivery choices. Shipping is often free within Europe for orders above a certain value, with tracking available.

• Orders placed before noon for in-stock items are shipped the same day.
• Free returns are available within 30 days for unused and unmounted products in original packaging within Europe.
• Customers must submit a return request through their account or by email to receive a return label.
• Warranty claims are supported with installation and usage conditions detailed for product coverage.

For full shipping details, terms of sale, and warranty info, customers are encouraged to review official Krosfou documentation or contact support.