Audi A6 Avant / Cat-back build
Audi A6 Avant: a T304 stainless cat-back exhaust.
This Audi A6 Avant 2.0 TFSI received a cat-back exhaust from Pi Motorsport. The workshop's original post specifies T304 stainless steel, mandrel bends and TIG welding; the film follows the car, the existing exhaust section and the fitting work.
- Vehicle
- Audi A6 Avant 2.0 TFSI
- Work described
- Cat-back exhaust system
- Material
- T304 stainless steel
- Fabrication
- Mandrel bends and TIG welding
Pi Motorsport's Birmingham workshop welcomes specialist enquiries from across the UK.
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A cat-back build with a stated material and method.
The original Pi Motorsport post identifies this car as an Audi A6 Avant 2.0 TFSI and the work as a cat-back exhaust system. It names T304 stainless steel, mandrel bends and TIG welding. Those are the confirmed details of this particular build; the post does not list a pipe diameter, silencer layout or tailpipe specification.
A cat-back project starts downstream of the catalytic converter, but the exact boundaries and retained parts should always be agreed for the individual vehicle. The film shows an older exhaust section on the workshop floor and new pipework being worked on beneath the raised Audi. It does not, on its own, establish every component that was replaced or retained.
What the workshop film lets you inspect.
The film opens with the A6 on the lift and a workshop explanation. It moves between the removed exhaust section, a technician working under the car and close views of the fitted metal pipework. Later, there is an on-camera conversation and a view of the car from behind. This gives a prospective customer more than a finished-car photograph: the installation and routing can be seen as part of the story.
The spoken conversation has not been treated as a customer testimonial, and the recording is not a controlled before-and-after sound test. The original post's technical description is the source for the material and joining method on this page.
What to decide before specifying your own A6 exhaust.
The interesting questions for another A6 owner are what is already fitted, what sound is wanted at cruising speed as well as under acceleration, and which original parts should stay. A workshop assessment can establish the suitable routing, joining points and any sound-control components before a quote is agreed.
The T304, mandrel-bend and TIG-welded description belongs to this filmed project. It should not be read as a universal specification or an advertised performance figure for every Audi. Send the workshop your model year, engine, photographs of the current underside if available and a clear description of your preferred sound so the team can discuss a suitable bespoke plan.
Questions about a similar build.
Was this Audi exhaust made from T304 stainless steel?
Yes. Pi Motorsport's caption identifies T304 stainless steel, mandrel bends and TIG welding for the filmed cat-back system.
Which silencers or tailpipes were changed?
The public post does not specify the silencer or tailpipe layout. Ask the workshop to confirm those choices for this build or to plan a specification for your own car.
Will my A6 sound exactly like the reel?
Not necessarily. The full exhaust setup, vehicle and recording conditions affect the result. Describe the sound you want, including how the car should behave on longer journeys, before agreeing a build.
Project description and film: Pi Motorsport's original Instagram post. Published on this website .
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