SLE Catless Downpipe – Audi A3, S3 & Seat Leon 1.8T Quattro (8L/1M) 1999–2003

SLE Catless Downpipe – Audi A3, S3 & Seat Leon 1.8T Quattro (8L/1M) 1999–2003

The SLE Catless Turbo Downpipe is a high-performance upgrade for early 1.8T Quattro models, including the Audi A3, S3, and Seat Leon (8L/1M chassis). Designed to replace the factory downpipe, this setup dramatically improves exhaust flow, reduces turbo lag, and boosts overall performance by eliminating restrictive catalytic converters.

Built from T304 stainless steel, this downpipe features TIG-welded, back-purged seams for strength and reliability. It’s ideal for tuned or track-focused builds and bolts directly to stock or aftermarket systems.

Product Features

• Catless high-flow design for maximum turbo efficiency
• T304 stainless steel construction for durability and rust resistance
• TIG-welded and back-purged for long-term reliability
• Enhanced exhaust tone and faster spool
• Direct bolt-on installation, no cutting or welding required

Vehicle Compatibility (1.8T Quattro Models Only)

• Audi A3 8L 1.8T Quattro (1999–2003)
• Audi S3 8L (1999–2003)
• Seat Leon 1M 1.8T Cupra R / 4 (1999–2003)

Disclaimer: This product is intended for OFF-ROAD OR RACING USE ONLY. It is not legal for use on public roads in vehicles subject to emissions regulations. A stage 2 ECU tune is required to prevent a check engine light (CEL).