A3 performance lives here.

Here are some features of our exhaust system. Each feature was chosen for performance and longevity reasons, and when making your exhaust decisions you should settle for nothing less:

• Fully mandrel bent tubing
• Thick .065" wall T304 stainless steel tubing
• Stainless steel internal muffler and resonator construction
• Stainless steel MIG and TIG welds
• Stainless steel T-bolt clamps
• Double-walled exhaust tips to reduce heat discoloration
• Included OEM turbo to downpipe gasket
• In-house dyno-developed

The catback system is topped off with our signature 3.15" beveled exhaust tips. The tips sport laser-etched AWE logos and are double-walled to ensure a mirror polish even under hard usage. The system has multiple slip joints with high-quality t-bolt clamps, to allow optimal adjustment.

Our catback systems will mate up to the stock downpipe, and any downpipe designed to mate to the factory exhaust.

Why did we choose 2.5 inch and not 3.0 inch diameter for our A3 exhaust? Our first prototypes of this system were indeed 3.0 inch, but we found that the effort it took to move the large mass of air in the 3.0 inch system at lower rpms resulted in a loss of torque with very little offsetting gain up top. Take a look at our 3.0 inch prototype dyno sheets in the Performance Specs tab and see why a 3.0 inch system is not appropriate for this car.

You've got questions? We've got answers. Click "ask an expert" at the top of this page.