Audi RS5 Coupé / Cabriolet 8T 4.2 V8 Valved Exhaust System (2010-2016)

The Audi RS5 Coupé / Cabriolet 8T 4.2 V8 exhaust in detail.

The first RS5, type 8T, received the 4.2 FSI from 2010 to 2016, a high-revving naturally aspirated V8 that spins beyond 8,000 rpm and produces 450 hp and 430 Nm. Its throttle response belongs to an era that modern turbos cannot reproduce. The RS4 and the twin-turbo V6 RS5 B9, like the S5 8T, have their own pages.

This V8’s natural sound is exceptional, hoarse in the midrange then screaming beyond 7,000 rpm, but the heavy, muffled factory exhaust holds part of it back. With the valves open, our valved cat-back reduces back pressure and makes the crescendo continuous all the way to the red line; with the valves closed, the coupé stays usable every day, without fatigue on long journeys.

On this naturally aspirated V8, the “Manifold” option lives up to its name: it replaces the manifolds and their catalytic converters. An RS5 still used every day is better off with 200-cell manifolds, since emissions control stays complete; the 100-cell versions are accepted or not depending on the car and the rules in your country, and the decat ones are reserved for track use. Remapped, the V8 gains only 3 to 8%, the usual order of magnitude for naturally aspirated engines.

This model is one of the pages carried over without a detailed technical specification: your VIN is checked before manufacturing. The system is fitted with clamps and gaskets, no welding, in about two hours; the drive modes keep control of the factory valves, otherwise the Rog remote. Titanium, around 40% lighter, or 304 stainless steel with its full bass note: both materials are offered, titanium in three finishes.