BMW M3 E90 / E92 / E93 4.0L Valved Exhaust System (2008-2013)

Which valved exhaust for a BMW M3 E90, E92 or E93 V8?

The Rog system for the BMW M3 V8 is a valved cat-back exhaust for the E90 sedan, E92 coupé and E93 convertible, built to your VIN in 304 stainless steel or titanium for the naturally aspirated 4.0-litre S65 with 420 hp. The factory system weighs 26.8 kg and holds back the V8's crescendo in the midrange; valves open, it screams all the way to 8,400 rpm.

Sound, options and fitting in detail: our BMW M3 E92 V8 guide.

The only M3 powered by a V8, the E9x generation exists as the E90 sedan, E92 coupé and E93 convertible. Its 4.0-litre S65, derived from the M5 E60’s V10, breathes without a turbo through individual throttle bodies and revs up to 8,400 rpm to deliver 420 hp and 400 Nm. This page covers the 2008 to 2013 model years; the six-cylinder M3 E46 and the twin-turbo F80 have their own pages.

On a naturally aspirated engine of this calibre, the exhaust decides everything. From the factory, a system weighing 26.8 kg according to the page holds back part of the crescendo, especially in the mid-range, where the V8 builds its fury. With the valves open, the valved Rog cat-back lets through a hoarse rumble in the intermediate revs, then a mechanical howl beyond 7,000 rpm; with the valves closed again, the M3 remains usable for the commute without tiring either the driver or the neighbours.

No modification is made to the body of this now sought-after M3: the system follows your VIN, attaches with clamps and gaskets in half a day in the workshop, and its valves answer either to the factory control or to the Rog remote, whose box slips into the trunk.

Here the “Manifold” option sells the front section of the system, with its catalytic converter and the X-pipe linking the V8’s two banks. On a naturally aspirated engine, its geometry matters, but the gain remains modest, even with an ECU remap. The V8 keeps its emissions control with the 200-cell catalyzed section; with the 100-cell, the M3 is accepted or not depending on the car and the rules in your country; the decat version, for its part, is reserved for track use. 304 stainless steel extends the V8’s roundness, while titanium makes it around 40% lighter and comes in brushed, gold or purple.