Bull-X 3″ downpipe, Audi S3 8L / TT 8N quattro

Bull-X 3″ downpipe, Audi S3 8L / TT 8N quattro

A downpipe is one of the most popular upgrades for a turbocharged engine. Efficient exhaust flow is important for a turbo system, and a freer-flowing pipe can provide a sportier sound while improving throttle response and power potential. Read more about the different downpipe types in our Futurez guide.

This product does not have model-specific ECE approval. It is intended for motorsport and other off-road enthusiast use. Always check the current road regulations before installation.

Bull-X 3″ downpipe, Audi S3 8L / TT 8N quattro is a vehicle-specific stainless-steel assembly for Audi S3 8L and TT 8N quattro 1.8T models. Its 76 mm / 3″ pipe size and freer-flowing design reduce exhaust back pressure and allow the turbocharger to operate with less restriction, particularly on tuned engines.

Lower back pressure can improve turbo response and throttle response while reducing thermal load on the exhaust side. The vehicle-specific design replaces the original component without unnecessary fabrication.

• Pipe diameter 76 mm / 3″
• Manufactured from stainless steel
• Vehicle-specific plug-and-play design
• Freer-flowing construction reduces exhaust back pressure
• Helps reduce thermal load on the turbo and exhaust side
• Optional integral heat shielding is available
• Connects to the original exhaust system
• Made in Germany

Catalytic-converter options

• With a 100-cell sports catalytic converter
• With a 200-cell sports catalytic converter
• Without a catalytic converter

The available catalytic-converter configurations do not include model-specific ECE approval. Do not use an unapproved product on public roads; always check the current road regulations.

Unapproved catalytic-converter options or a catalyst-delete version may trigger a fault code related to the downstream oxygen sensor. Any required software changes depend on the vehicle ECU and selected version.

Examples of compatible vehicles

• Audi S3 8L 1.8T quattro 210/225 hp
• Audi TT 8N 1.8T quattro 225 hp

Before ordering, verify the vehicle engine and body version and the exact vehicle coverage of the selected catalytic-converter approval.