Audi A5 8T Valved Exhaust System (2007-2016)

The Audi A5 8T exhaust in detail.

The A5 8T, the first generation of the coupé and its derivatives between 2007 and 2016, is covered here in its four-cylinder turbo TFSI version with 180 hp and 320 Nm, the figures used by the page and its guide. The V6 and V8 S5 8T, the RS5 8T and the 2016 A4 or A5 B8 2.0 TFSI have separate pages.

Audi tuned this engine for efficiency and quietness, not for emotion, and the factory sound ends up anonymous. Yet a TFSI responds very well to a better-designed exhaust: with the valves open, our valved cat-back gives it a full, sporty tone without chasing volume at all costs; with the valves closed, the coupé becomes completely discreet again.

This page is one of the older models carried over without a detailed technical specification: we check your VIN, in field E of the registration document, before any manufacturing, particularly the exact engine. In the workshop, about two hours, clamps, gaskets and no welding; factory valves are retained where they exist, otherwise the Rog remote controls them from its box in the boot.

The “Manifold” option replaces the front part, the one that carries the catalytic converter between the engine and the system. On an everyday A5, go for the 200-cell version, which keeps emissions control; the 100-cell is accepted or not depending on the car and the rules in your country, and the decat is reserved for track use. Fitted on its own, this part enriches the voice without adding power, in the absence of a suitable map. Two materials to choose from for the A5: robust 304 stainless steel, and titanium, around 40% lighter and offered in three colours.