Audi A4 / A4 Avant B8 3.2 FSI V6 Valved Exhaust System (2007-2012)

The Audi A4 / A4 Avant B8 3.2 FSI V6 exhaust in detail.

No turbo under the bonnet of this A4 B8: the 3.2 FSI is a naturally aspirated 3.2-litre V6 with direct injection, delivering 265 hp and 330 Nm progressively and giving its best in the upper half of the rev range. The page covers 2007 to 2012 and targets the A4; the A5 is not yet documented in our records, so your VIN is the judge before manufacturing.

A naturally aspirated V6 has a hoarser, more metallic voice than a four-cylinder, and every climb through the revs is worth listening to. On the stock A4, only a distant hum remains. With the valved Rog cat-back and the valves open, the sound is deep at idle, then brighter and brighter as the revs rise, and every gear becomes a little climb you want to prolong. With the valves closed, the saloon becomes hushed again.

This page does not sell a front section: the system only replaces the part located after the factory catalytic converters, which stay in place. On a naturally aspirated engine, the extra breathing remains modest and the factory power does not change without an ECU remap. The page nevertheless quotes Stage 2 figures of 289 hp and 368 Nm, achieved with a full ECU remap.

Fitting with clamps and gaskets, no welding, in about two hours, with round tailpipes. If your A4 has factory valves, the system retains their control; otherwise, the Rog remote and its box in the boot open them at the press of a button. 304 stainless steel for robustness, titanium around 40% lighter and more crystalline at high revs, in brushed, gold or purple.